Rails：启动快照。 dlopen：找不到合适的图像。找到了：（LoadError）
Rails: bootsnap. dlopen: no suitable image found. Did find: (LoadError)
我是 ruby-on-rails 和 mac 的新手。我收到此错误 dlopen(/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle, 9): no suitable image found. Did find: (LoadError)。由 bootsnap 引起。
我正在尝试编译 ruby-on-rails 项目。使用
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]
Rails 5.2.3
Bundler version 2.0.2
xcode-select version 2354
macOS Mojave version 10.14.6
运行 直到现在都是完美的。我搜索并尝试了很多东西，但没有找到合适的解决方案。
这是我的回溯日志：
2019-11-09 18:43:05 WARN Selenium [DEPRECATION] Selenium::WebDriver::Chrome#driver_path= is deprecated. Use Selenium::WebDriver::Chrome::Service#driver_path= instead.
Unable to load the EventMachine C extension; To use the pure-ruby reactor, require 'em/pure_ruby'
Traceback (most recent call last):
95: from bin/rails:4:in `<main>'
94: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
93: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
92: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
91: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
90: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
89: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
88: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
87: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
86: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/commands.rb:18:in `<main>'
85: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/command.rb:46:in `invoke'
84: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/command/base.rb:65:in `perform'
83: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/thor-0.20.3/lib/thor.rb:387:in `dispatch'
82: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/thor-0.20.3/lib/thor/invocation.rb:126:in `invoke_command'
81: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/thor-0.20.3/lib/thor/command.rb:27:in `run'
80: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/commands/test/test_command.rb:33:in `perform'
79: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:39:in `run'
78: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:50:in `load_tests'
77: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:50:in `each'
76: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:50:in `block in load_tests'
75: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
74: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
73: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
72: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
71: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
70: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
69: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
68: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
67: from /Users/hasnainsomro/workspace/RTN2/test/models/cancel_reason_test.rb:12:in `<main>'
66: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
65: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
64: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
63: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
62: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
61: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
60: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
59: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
58: from /Users/hasnainsomro/workspace/RTN2/test/test_helper.rb:2:in `<main>'
57: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:48:in `require_relative'
56: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
55: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
54: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
53: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
52: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
51: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
50: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
49: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
48: from /Users/hasnainsomro/workspace/RTN2/config/environment.rb:2:in `<main>'
47: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:48:in `require_relative'
46: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
45: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
44: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
43: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
42: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
41: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
40: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
39: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
38: from /Users/hasnainsomro/workspace/RTN2/config/application.rb:7:in `<main>'
37: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler.rb:114:in `require'
36: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:65:in `require'
35: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:65:in `each'
34: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:76:in `block in require'
33: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:76:in `each'
32: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
31: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
30: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
29: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
28: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
27: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
26: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/heroku-forward-0.4.0/lib/heroku-forward.rb:3:in `<main>'
25: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
24: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
23: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
22: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
21: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
20: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
19: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
18: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
17: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/em-proxy-0.1.9/lib/em-proxy.rb:5:in `<main>'
16: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
15: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
14: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
13: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
12: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
11: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
10: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
9: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
8: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/eventmachine.rb:8:in `<main>'
7: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
6: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
5: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
4: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
3: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
2: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
1: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
/Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require': dlopen(/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle, 9): no suitable image found. Did find: (LoadError)
/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle: mach-o, but built for simulator (not macOS)
/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle: mach-o, but built for simulator (not macOS) - /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle
这是我的宝石列表：
source 'https://rubygems.org'
git_source(:github) {|repo| "https://github.com/#{repo}.git"}
ruby '2.6.3'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.3'
# Use postgresql as the database for Active Record
gem 'pg', '~> 1.1.4'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
gem 'duktape'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use ActiveModel has_secure_password
gem 'bcrypt', '~> 3.1.13'
# gem 'bcrypt-ruby', '3.1.13', :require => 'bcrypt'
# Use ActiveStorage variant
# gem 'mini_magick', '~> 4.8'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end
group :development do
# Access an interactive console on exception pages or by calling 'console' anywhere in the code.
gem 'web-console', '>= 3.3.0'
gem 'annotate', '~> 2.7.5'
gem 'pry', '~> 0.12.2'
# gem 'annotate', '~> 3.0', '>= 3.0.2'
end
group :test do
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 2.15'
gem 'selenium-webdriver'
# Easy installation and use of chromedriver to run system tests with Chrome
gem 'chromedriver-helper'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
gem 'jwt'
gem 'heroku-forward'
gem "active_model_serializers", require: true
我搜索了 google，发现我在使用 eventmachine gem 时没有指定平台。我必须安装 eventmachine gem 并指定平台。
Although eventmachine is provided as x64-mingw platform gem, it doesn't support ruby-2.4 or 2.5 right now. Use gem install eventmachine --platform ruby in the meantime.
https://github.com/oneclick/rubyinstaller2/issues/96#issuecomment-361549776
我是 ruby-on-rails 和 mac 的新手。我收到此错误 dlopen(/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle, 9): no suitable image found. Did find: (LoadError)。由 bootsnap 引起。
我正在尝试编译 ruby-on-rails 项目。使用
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]
Rails 5.2.3
Bundler version 2.0.2
xcode-select version 2354
macOS Mojave version 10.14.6
运行 直到现在都是完美的。我搜索并尝试了很多东西，但没有找到合适的解决方案。
这是我的回溯日志：
2019-11-09 18:43:05 WARN Selenium [DEPRECATION] Selenium::WebDriver::Chrome#driver_path= is deprecated. Use Selenium::WebDriver::Chrome::Service#driver_path= instead.
Unable to load the EventMachine C extension; To use the pure-ruby reactor, require 'em/pure_ruby'
Traceback (most recent call last):
95: from bin/rails:4:in `<main>'
94: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
93: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
92: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
91: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
90: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
89: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
88: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
87: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
86: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/commands.rb:18:in `<main>'
85: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/command.rb:46:in `invoke'
84: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/command/base.rb:65:in `perform'
83: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/thor-0.20.3/lib/thor.rb:387:in `dispatch'
82: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/thor-0.20.3/lib/thor/invocation.rb:126:in `invoke_command'
81: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/thor-0.20.3/lib/thor/command.rb:27:in `run'
80: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/commands/test/test_command.rb:33:in `perform'
79: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:39:in `run'
78: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:50:in `load_tests'
77: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:50:in `each'
76: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/railties-5.2.3/lib/rails/test_unit/runner.rb:50:in `block in load_tests'
75: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
74: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
73: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
72: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
71: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
70: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
69: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
68: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
67: from /Users/hasnainsomro/workspace/RTN2/test/models/cancel_reason_test.rb:12:in `<main>'
66: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
65: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
64: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
63: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
62: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
61: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
60: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
59: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
58: from /Users/hasnainsomro/workspace/RTN2/test/test_helper.rb:2:in `<main>'
57: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:48:in `require_relative'
56: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
55: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
54: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
53: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
52: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
51: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
50: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
49: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
48: from /Users/hasnainsomro/workspace/RTN2/config/environment.rb:2:in `<main>'
47: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:48:in `require_relative'
46: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
45: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
44: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
43: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
42: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
41: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
40: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
39: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
38: from /Users/hasnainsomro/workspace/RTN2/config/application.rb:7:in `<main>'
37: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler.rb:114:in `require'
36: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:65:in `require'
35: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:65:in `each'
34: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:76:in `block in require'
33: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:76:in `each'
32: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bundler-2.0.2/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
31: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
30: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
29: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
28: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
27: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
26: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/heroku-forward-0.4.0/lib/heroku-forward.rb:3:in `<main>'
25: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
24: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
23: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
22: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
21: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
20: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
19: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
18: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
17: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/em-proxy-0.1.9/lib/em-proxy.rb:5:in `<main>'
16: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
15: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
14: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
13: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
12: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
11: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
10: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
9: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
8: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/eventmachine.rb:8:in `<main>'
7: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require'
6: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency'
5: from /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require'
4: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
3: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
2: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
1: from /Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
/Users/hasnainsomro/.rvm/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require': dlopen(/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle, 9): no suitable image found. Did find: (LoadError)
/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle: mach-o, but built for simulator (not macOS)
/Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle: mach-o, but built for simulator (not macOS) - /Users/hasnainsomro/.rvm/gems/ruby-2.6.3/gems/eventmachine-1.2.7/lib/rubyeventmachine.bundle
这是我的宝石列表：
source 'https://rubygems.org'
git_source(:github) {|repo| "https://github.com/#{repo}.git"}
ruby '2.6.3'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.3'
# Use postgresql as the database for Active Record
gem 'pg', '~> 1.1.4'
# Use Puma as the app server
gem 'puma', '~> 3.11'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# See https://github.com/rails/execjs#readme for more supported runtimes
gem 'duktape'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
gem 'turbolinks', '~> 5'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use ActiveModel has_secure_password
gem 'bcrypt', '~> 3.1.13'
# gem 'bcrypt-ruby', '3.1.13', :require => 'bcrypt'
# Use ActiveStorage variant
# gem 'mini_magick', '~> 4.8'
# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.1.0', require: false
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end
group :development do
# Access an interactive console on exception pages or by calling 'console' anywhere in the code.
gem 'web-console', '>= 3.3.0'
gem 'annotate', '~> 2.7.5'
gem 'pry', '~> 0.12.2'
# gem 'annotate', '~> 3.0', '>= 3.0.2'
end
group :test do
# Adds support for Capybara system testing and selenium driver
gem 'capybara', '>= 2.15'
gem 'selenium-webdriver'
# Easy installation and use of chromedriver to run system tests with Chrome
gem 'chromedriver-helper'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
gem 'jwt'
gem 'heroku-forward'
gem "active_model_serializers", require: true
我搜索了 google，发现我在使用 eventmachine gem 时没有指定平台。我必须安装 eventmachine gem 并指定平台。
Although eventmachine is provided as x64-mingw platform gem, it doesn't support ruby-2.4 or 2.5 right now. Use
gem install eventmachine --platform rubyin the meantime.
https://github.com/oneclick/rubyinstaller2/issues/96#issuecomment-361549776