无法在 heroku 上构建和部署 Rails 6.0.4.1 应用程序 - 抛出 gyp verb cli 错误
Unable to build and deploy Rails 6.0.4.1 app on heroku - Throws gyp verb cli error
您好，我在 heroku 上部署了一个分支并抛出了这个错误。我还尝试部署一个运行良好的分支，但也显示相同的错误。
本地纱线版本：1.22.17
本地节点版本：v12.22.7
请帮助!!!
尝试在没有 yarn.lock 和包锁的情况下构建相同的东西。
这是通过 CLI 启动 Heroku 部署构建日志的方式
yarn install v1.22.17
remote: warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolution inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json.
remote: [1/5] Validating package.json...
remote: [2/5] Resolving packages...
remote: [3/5] Fetching packages...
remote: [4/5] Linking dependencies...
remote: warning " > webpack-dev-server@4.6.0" has unmet peer dependency "webpack@^4.37.0 || ^5.0.0".
remote: warning "webpack-dev-server > webpack-dev-middleware@5.2.1" has unmet peer dependency "webpack@^4.0.0 || ^5.0.0".
remote: [5/5] Building fresh packages...
remote: error /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass: Command failed.
remote: Exit code: 1
remote: Command: node scripts/build.js
remote: Arguments:
remote: Directory: /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass
remote: Output:
remote: Building: /tmp/build_df192222/bin/node /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/bin/node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
remote: gyp info it worked if it ends with ok
remote: gyp verb cli [
remote: gyp verb cli '/tmp/build_df192222/bin/node',
remote: gyp verb cli '/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/bin/node-gyp.js',
remote: gyp verb cli 'rebuild',
。
.
.
.
.
`
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h: In function ‘void v8::internal::PerformCastCheck(T*)’:
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:38: error: ‘remove_cv_t’ is not a member of ‘std’; did you mean ‘remove_cv’?
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^~~~~~~~~~~
remote: | remove_cv
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:38: error: ‘remove_cv_t’ is not a member of ‘std’; did you mean ‘remove_cv’?
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^~~~~~~~~~~
remote: | remove_cv
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:50: error: template argument 2 is invalid
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:63: error: ‘::Perform’ has not been declared
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^~~~~~~
remote: ../src/binding.cpp: In function ‘Nan::NAN_METHOD_RETURN_TYPE render(Nan::NAN_METHOD_ARGS_TYPE)’:
remote: ../src/binding.cpp:284:98: warning: cast between incompatible function types from ‘void (*)(uv_work_t*)’ {aka ‘void (*)(uv_work_s*)’} to ‘uv_after_work_cb’ {aka ‘void (*)(uv_work_s*, int)’} [-Wcast-function-type]
remote: 284 | int status = uv_queue_work(uv_default_loop(), &ctx_w->request, compile_it, (uv_after_work_cb)MakeCallback);
remote: | ^~~~~~~~~~~~
remote: ../src/binding.cpp: In function ‘Nan::NAN_METHOD_RETURN_TYPE render_file(Nan::NAN_METHOD_ARGS_TYPE)’:
remote: ../src/binding.cpp:320:98: warning: cast between incompatible function types from ‘void (*)(uv_work_t*)’ {aka ‘void (*)(uv_work_s*)’} to ‘uv_after_work_cb’ {aka ‘void (*)(uv_work_s*, int)’} [-Wcast-function-type]
remote: 320 | int status = uv_queue_work(uv_default_loop(), &ctx_w->request, compile_it, (uv_after_work_cb)MakeCallback);
remote: | ^~~~~~~~~~~~
remote: In file included from ../../../../../nan/nan.h:58,
remote: from ../src/binding.cpp:1:
remote: ../src/binding.cpp: At global scope:
remote: /app/.node-gyp/16.13.1/include/node/node.h:821:43: warning: cast between incompatible function types from ‘void (*)(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE)’ {aka ‘void (*)(v8::Local<v8::Object>)’} to ‘node::addon_register_func’ {aka ‘void (*)(v8::Local<v8::Object>, v8::Local<v8::Value>, void*)’} [-Wcast-function-type]
remote: 821 | (node::addon_register_func) (regfunc), \
remote: | ^
remote: /app/.node-gyp/16.13.1/include/node/node.h:855:3: note: in expansion of macro ‘NODE_MODULE_X’
remote: 855 | NODE_MODULE_X(modname, regfunc, NULL, 0) // NOLINT (readability/null_usage)
remote: | ^~~~~~~~~~~~~
remote: ../src/binding.cpp:358:1: note: in expansion of macro ‘NODE_MODULE’
remote: 358 | NODE_MODULE(binding, RegisterModule);
remote: | ^~~~~~~~~~~
remote: make: *** [binding.target.mk:133: Release/obj.target/binding/src/binding.o] Error 1
remote: make: Leaving directory '/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass/build'
remote: gyp ERR! build error
remote: gyp ERR! stack Error: `make` failed with exit code: 2
remote: gyp ERR! stack at ChildProcess.onExit (/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/lib/build.js:262:23)
remote: gyp ERR! stack at ChildProcess.emit (node:events:390:28)
remote: gyp ERR! stack at Process.ChildProcess._handle.onexit (node:internal/child_process:290:12)
remote: gyp ERR! System Linux 4.4.0-1097-aws
remote: gyp ERR! command "/tmp/build_df192222/bin/node" "/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
remote: gyp ERR! cwd /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass
remote: gyp ERR! node -v v16.13.1
remote: gyp ERR! node-gyp -v v3.8.0
remote: gyp ERR! not ok
remote: Build failed with error code: 1
remote:
remote: !
remote: ! Precompiling assets failed.
remote: !
remote: ! Push rejected, failed to compile Ruby app.
remote:
remote: ! Push failed
虽然它是一个 Rails 应用程序，但我在引擎中添加了节点 package.json。
{
"name": "travel_empire",
"private": true,
"dependencies": {
"@fortawesome/fontawesome-free": "^5.15.4",
"@popperjs/core": "^2.10.2",
"@rails/actioncable": "^6.0.0",
"@rails/activestorage": "^6.0.0",
"@rails/ujs": "^6.0.0",
"@rails/webpacker": "4.3.0",
"bootstrap": "4.3.1",
"bootstrap-icons": "^1.5.0",
"easy-autocomplete": "^1.3.5",
"jquery": "^3.6.0",
"jquery-ui-dist": "^1.12.1",
"js-autocomplete": "^1.0.4",
"node-sass": "^7.0.0",
"popper.js": "^1.16.1",
"turbolinks": "^5.2.0"
},
"version": "0.1.0",
"devDependencies": {
"webpack-dev-server": "^4.6.0"
},
"engines": {
"node": "16.x"
}
}
宝石文件
source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }
ruby '2.7.3'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 6.0.3', '>= 6.0.3.7'
gem 'mongoid', git: 'https://github.com/mongodb/mongoid.git'
# Use Puma as the app server
gem 'puma', '~> 4.1'
# Use SCSS for stylesheets
gem 'sass-rails', '>= 6'
# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
gem 'webpacker', '~> 4.0'
# 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', '~> 2.7'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use Active Model has_secure_password
# Use Active Storage variant
# gem 'image_processing', '~> 1.2'
gem 'axlsx'
gem 'caxlsx_rails'
#Bootstrap for UI
gem 'bootstrap', '~> 5.1.0'
gem 'bootstrap-timepicker-rails', '~> 0.1.3'
gem 'bootstrap-select-rails', '~> 1.6', '>= 1.6.3'
#JQuery Rails
gem 'jquery-rails'
gem 'rails_12factor', group: :production
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.4.2', 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 'listen', '~> 3.2'
gem 'pry'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
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 web drivers to run system tests with browsers
gem 'webdrivers'
gem 'cucumber-rails', require: false
gem 'database_cleaner'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
#HTTParty for RESTful API calls
gem 'httparty'
#Paperclip for storing files
gem 'paperclip'
gem "mongoid-paperclip", :require => "mongoid_paperclip"
gem "letter_opener", :group => :development
我遇到了类似的问题，但已通过以下步骤解决。
- 运行以下命令。
heroku buildpacks:add heroku/nodejs --index 1
- 在 package.json 中将节点版本从
16.x 更新到 12.16.2。
Heroku 似乎已经更新了他们在构建过程中使用的节点版本，因为我也收到了与 webpacker 相关的相同错误消息：
[4/4] Building fresh packages...
error /tmp/build_1ea87a91/node_modules/@rails/webpacker/node_modules/node-sass: Command failed.
Exit code: 1
由于我的应用程序中的 rails/webpacker 4.3.0，我的部署失败了。在朋友的帮助下，我升级到 webpacker 5.4.3 解决了这个问题。
您可以将 package.json 文件中的 webpacker verson 升级到 5.4.3，或者如果您使用 yarn 运行 下面的命令：
yarn upgrade @rails/webpacker --latest
更多信息：
由于 nodejs 和 ruby buildpacks 已经按以下顺序设置在我的应用程序中：
$ heroku buildpacks
=== myapp Buildpack URLs
1. heroku/ruby
2. heroku/nodejs
以下命令 heroku buildpacks:add heroku/nodejs --index 1 无效。
我不得不使用这个命令删除它们：
heroku buildpacks:remove heroku/ruby
heroku buildpacks:remove heroku/nodejs
并重新添加它们（按此顺序）：
heroku buildpacks:add heroku/nodejs
heroku buildpacks:add heroku/ruby
最后通过我的 package.json:
在 Heroku 上指定一个节点版本
{
"engines": {
"node": "12.16.2"
}
}
这个 对解决我的问题也很有用。
您好，我在 heroku 上部署了一个分支并抛出了这个错误。我还尝试部署一个运行良好的分支，但也显示相同的错误。
本地纱线版本：1.22.17 本地节点版本：v12.22.7 请帮助!!!
尝试在没有 yarn.lock 和包锁的情况下构建相同的东西。
这是通过 CLI 启动 Heroku 部署构建日志的方式
yarn install v1.22.17
remote: warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolution inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json.
remote: [1/5] Validating package.json...
remote: [2/5] Resolving packages...
remote: [3/5] Fetching packages...
remote: [4/5] Linking dependencies...
remote: warning " > webpack-dev-server@4.6.0" has unmet peer dependency "webpack@^4.37.0 || ^5.0.0".
remote: warning "webpack-dev-server > webpack-dev-middleware@5.2.1" has unmet peer dependency "webpack@^4.0.0 || ^5.0.0".
remote: [5/5] Building fresh packages...
remote: error /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass: Command failed.
remote: Exit code: 1
remote: Command: node scripts/build.js
remote: Arguments:
remote: Directory: /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass
remote: Output:
remote: Building: /tmp/build_df192222/bin/node /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/bin/node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
remote: gyp info it worked if it ends with ok
remote: gyp verb cli [
remote: gyp verb cli '/tmp/build_df192222/bin/node',
remote: gyp verb cli '/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/bin/node-gyp.js',
remote: gyp verb cli 'rebuild',
。 . . . . `
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h: In function ‘void v8::internal::PerformCastCheck(T*)’:
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:38: error: ‘remove_cv_t’ is not a member of ‘std’; did you mean ‘remove_cv’?
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^~~~~~~~~~~
remote: | remove_cv
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:38: error: ‘remove_cv_t’ is not a member of ‘std’; did you mean ‘remove_cv’?
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^~~~~~~~~~~
remote: | remove_cv
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:50: error: template argument 2 is invalid
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^
remote: /app/.node-gyp/16.13.1/include/node/v8-internal.h:492:63: error: ‘::Perform’ has not been declared
remote: 492 | !std::is_same<Data, std::remove_cv_t<T>>::value>::Perform(data);
remote: | ^~~~~~~
remote: ../src/binding.cpp: In function ‘Nan::NAN_METHOD_RETURN_TYPE render(Nan::NAN_METHOD_ARGS_TYPE)’:
remote: ../src/binding.cpp:284:98: warning: cast between incompatible function types from ‘void (*)(uv_work_t*)’ {aka ‘void (*)(uv_work_s*)’} to ‘uv_after_work_cb’ {aka ‘void (*)(uv_work_s*, int)’} [-Wcast-function-type]
remote: 284 | int status = uv_queue_work(uv_default_loop(), &ctx_w->request, compile_it, (uv_after_work_cb)MakeCallback);
remote: | ^~~~~~~~~~~~
remote: ../src/binding.cpp: In function ‘Nan::NAN_METHOD_RETURN_TYPE render_file(Nan::NAN_METHOD_ARGS_TYPE)’:
remote: ../src/binding.cpp:320:98: warning: cast between incompatible function types from ‘void (*)(uv_work_t*)’ {aka ‘void (*)(uv_work_s*)’} to ‘uv_after_work_cb’ {aka ‘void (*)(uv_work_s*, int)’} [-Wcast-function-type]
remote: 320 | int status = uv_queue_work(uv_default_loop(), &ctx_w->request, compile_it, (uv_after_work_cb)MakeCallback);
remote: | ^~~~~~~~~~~~
remote: In file included from ../../../../../nan/nan.h:58,
remote: from ../src/binding.cpp:1:
remote: ../src/binding.cpp: At global scope:
remote: /app/.node-gyp/16.13.1/include/node/node.h:821:43: warning: cast between incompatible function types from ‘void (*)(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE)’ {aka ‘void (*)(v8::Local<v8::Object>)’} to ‘node::addon_register_func’ {aka ‘void (*)(v8::Local<v8::Object>, v8::Local<v8::Value>, void*)’} [-Wcast-function-type]
remote: 821 | (node::addon_register_func) (regfunc), \
remote: | ^
remote: /app/.node-gyp/16.13.1/include/node/node.h:855:3: note: in expansion of macro ‘NODE_MODULE_X’
remote: 855 | NODE_MODULE_X(modname, regfunc, NULL, 0) // NOLINT (readability/null_usage)
remote: | ^~~~~~~~~~~~~
remote: ../src/binding.cpp:358:1: note: in expansion of macro ‘NODE_MODULE’
remote: 358 | NODE_MODULE(binding, RegisterModule);
remote: | ^~~~~~~~~~~
remote: make: *** [binding.target.mk:133: Release/obj.target/binding/src/binding.o] Error 1
remote: make: Leaving directory '/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass/build'
remote: gyp ERR! build error
remote: gyp ERR! stack Error: `make` failed with exit code: 2
remote: gyp ERR! stack at ChildProcess.onExit (/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/lib/build.js:262:23)
remote: gyp ERR! stack at ChildProcess.emit (node:events:390:28)
remote: gyp ERR! stack at Process.ChildProcess._handle.onexit (node:internal/child_process:290:12)
remote: gyp ERR! System Linux 4.4.0-1097-aws
remote: gyp ERR! command "/tmp/build_df192222/bin/node" "/tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
remote: gyp ERR! cwd /tmp/build_df192222/node_modules/@rails/webpacker/node_modules/node-sass
remote: gyp ERR! node -v v16.13.1
remote: gyp ERR! node-gyp -v v3.8.0
remote: gyp ERR! not ok
remote: Build failed with error code: 1
remote:
remote: !
remote: ! Precompiling assets failed.
remote: !
remote: ! Push rejected, failed to compile Ruby app.
remote:
remote: ! Push failed
虽然它是一个 Rails 应用程序，但我在引擎中添加了节点 package.json。
{
"name": "travel_empire",
"private": true,
"dependencies": {
"@fortawesome/fontawesome-free": "^5.15.4",
"@popperjs/core": "^2.10.2",
"@rails/actioncable": "^6.0.0",
"@rails/activestorage": "^6.0.0",
"@rails/ujs": "^6.0.0",
"@rails/webpacker": "4.3.0",
"bootstrap": "4.3.1",
"bootstrap-icons": "^1.5.0",
"easy-autocomplete": "^1.3.5",
"jquery": "^3.6.0",
"jquery-ui-dist": "^1.12.1",
"js-autocomplete": "^1.0.4",
"node-sass": "^7.0.0",
"popper.js": "^1.16.1",
"turbolinks": "^5.2.0"
},
"version": "0.1.0",
"devDependencies": {
"webpack-dev-server": "^4.6.0"
},
"engines": {
"node": "16.x"
}
}
宝石文件
source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }
ruby '2.7.3'
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 6.0.3', '>= 6.0.3.7'
gem 'mongoid', git: 'https://github.com/mongodb/mongoid.git'
# Use Puma as the app server
gem 'puma', '~> 4.1'
# Use SCSS for stylesheets
gem 'sass-rails', '>= 6'
# Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
gem 'webpacker', '~> 4.0'
# 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', '~> 2.7'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 4.0'
# Use Active Model has_secure_password
# Use Active Storage variant
# gem 'image_processing', '~> 1.2'
gem 'axlsx'
gem 'caxlsx_rails'
#Bootstrap for UI
gem 'bootstrap', '~> 5.1.0'
gem 'bootstrap-timepicker-rails', '~> 0.1.3'
gem 'bootstrap-select-rails', '~> 1.6', '>= 1.6.3'
#JQuery Rails
gem 'jquery-rails'
gem 'rails_12factor', group: :production
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.4.2', 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 'listen', '~> 3.2'
gem 'pry'
# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
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 web drivers to run system tests with browsers
gem 'webdrivers'
gem 'cucumber-rails', require: false
gem 'database_cleaner'
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
#HTTParty for RESTful API calls
gem 'httparty'
#Paperclip for storing files
gem 'paperclip'
gem "mongoid-paperclip", :require => "mongoid_paperclip"
gem "letter_opener", :group => :development
我遇到了类似的问题，但已通过以下步骤解决。
- 运行以下命令。
heroku buildpacks:add heroku/nodejs --index 1 - 在 package.json 中将节点版本从
16.x更新到12.16.2。
Heroku 似乎已经更新了他们在构建过程中使用的节点版本，因为我也收到了与 webpacker 相关的相同错误消息：
[4/4] Building fresh packages...
error /tmp/build_1ea87a91/node_modules/@rails/webpacker/node_modules/node-sass: Command failed.
Exit code: 1
由于我的应用程序中的 rails/webpacker 4.3.0，我的部署失败了。在朋友的帮助下，我升级到 webpacker 5.4.3 解决了这个问题。
您可以将 package.json 文件中的 webpacker verson 升级到 5.4.3，或者如果您使用 yarn 运行 下面的命令：
yarn upgrade @rails/webpacker --latest
更多信息：
由于 nodejs 和 ruby buildpacks 已经按以下顺序设置在我的应用程序中：
$ heroku buildpacks
=== myapp Buildpack URLs
1. heroku/ruby
2. heroku/nodejs
以下命令 heroku buildpacks:add heroku/nodejs --index 1 无效。
我不得不使用这个命令删除它们：
heroku buildpacks:remove heroku/ruby
heroku buildpacks:remove heroku/nodejs
并重新添加它们（按此顺序）：
heroku buildpacks:add heroku/nodejs
heroku buildpacks:add heroku/ruby
最后通过我的 package.json:
{
"engines": {
"node": "12.16.2"
}
}
这个