建议使用 JupyterLab build 并成功安装，但无法运行。为什么？
JupyterLab build is suggested and successfully installed, but will not work. Why?
我是来自 Anaconda 的 运行 JupyterLab，并安装了 JupyterLab plotly extension 使用：
conda install -c conda-forge jupyterlab-plotly-extension
貌似安装成功了，但是还是有问题。
启动 JuyterLab 时，我收到此提示：
点击 BUILD 给我这个：
然后单击 RELOAD 重新定位 JupyterLab，但我又得到了这个：
它不停地旋转。有谁知道为什么？
单击 CANCEL 也无济于事，因为 plotly 不会生成任何图，只会生成 :
解法：
停用防火墙并运行在windows命令提示符下执行以下命令：
jupyter lab build
详情：
原来是防火墙的问题，不知道为什么在JupyterLab界面不提示。 windows 命令提示符中的以下命令返回以下错误消息：
命令：
jupyter lab build
输出：
C:>jupyter labextension list JupyterLab v0.34.9 Known labextensions:
app dir:
C:\Users*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab
@jupyterlab/plotly-extension v0.18.2 enabled ok
Build recommended, please run jupyter lab build:
@jupyterlab/plotly-extension needs to be included in build
C:>jupyter lab build [LabBuildApp] JupyterLab 0.34.9 [LabBuildApp]
Building in
C:\Users*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab
[LabBuildApp] > node
C:\Users*******\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyterlab\staging\yarn.js
install yarn install v1.9.4 info No lockfile found. [1/4] Resolving
packages... error An unexpected error occurred:
"https://registry.yarnpkg.com/@jupyterlab%2fapplication: self signed
certificate in certificate chain". info If you think this is a bug,
please open a bug report with the information provided in
"C:\Users\*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab\staging\yarn-error.log".
这部分让我怀疑是防火墙问题：
self signed certificate in certificate chain
运行 不那么严格的 fire-wall 设置上的相同命令会触发此输出（缩短）：
WARNING in d3-array Multiple versions of d3-array found:
1.2.4 ./~/d3-scale/~/d3-array from ./~/d3-scale/~/d3-array\src\index.js
2.2.0 ./~/d3-array from ./~/d3-array\src\index.js
Check how you can resolve duplicate packages:
https://github.com/darrenscerri/duplicate-package-checker-webpack-plugin#resolving-duplicate-packages-in-your-bundle
Child html-webpack-plugin for "index.html":
1 asset
Entrypoint undefined = index.html
[KTNU] ./node_modules/html-loader!./templates/partial.html 567 bytes {0} [built]
[YuTi] (webpack)/buildin/module.js 497 bytes {0} [built]
[aS2v] ./node_modules/html-webpack-plugin/lib/loader.js!./templates/template.html
1.22 KiB {0} [built]
[yLpj] (webpack)/buildin/global.js 489 bytes {0} [built]
+ 1 hidden module
尽管有一些警告消息，JupyterLab 现在可以毫无问题地生成绘图图形：
我是来自 Anaconda 的 运行 JupyterLab，并安装了 JupyterLab plotly extension 使用：
conda install -c conda-forge jupyterlab-plotly-extension
貌似安装成功了，但是还是有问题。 启动 JuyterLab 时，我收到此提示：
点击 BUILD 给我这个：
然后单击 RELOAD 重新定位 JupyterLab，但我又得到了这个：
它不停地旋转。有谁知道为什么？
单击 CANCEL 也无济于事，因为 plotly 不会生成任何图，只会生成
解法：
停用防火墙并运行在windows命令提示符下执行以下命令：
jupyter lab build
详情：
原来是防火墙的问题，不知道为什么在JupyterLab界面不提示。 windows 命令提示符中的以下命令返回以下错误消息：
命令：
jupyter lab build
输出：
C:>jupyter labextension list JupyterLab v0.34.9 Known labextensions: app dir: C:\Users*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab @jupyterlab/plotly-extension v0.18.2 enabled ok
Build recommended, please run
jupyter lab build: @jupyterlab/plotly-extension needs to be included in buildC:>jupyter lab build [LabBuildApp] JupyterLab 0.34.9 [LabBuildApp] Building in C:\Users*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab [LabBuildApp] > node C:\Users*******\AppData\Local\Continuum\anaconda3\lib\site-packages\jupyterlab\staging\yarn.js install yarn install v1.9.4 info No lockfile found. [1/4] Resolving packages... error An unexpected error occurred: "https://registry.yarnpkg.com/@jupyterlab%2fapplication: self signed certificate in certificate chain". info If you think this is a bug, please open a bug report with the information provided in "C:\Users\*******\AppData\Local\Continuum\anaconda3\share\jupyter\lab\staging\yarn-error.log".
这部分让我怀疑是防火墙问题：
self signed certificate in certificate chain
运行 不那么严格的 fire-wall 设置上的相同命令会触发此输出（缩短）：
WARNING in d3-array Multiple versions of d3-array found: 1.2.4 ./~/d3-scale/~/d3-array from ./~/d3-scale/~/d3-array\src\index.js 2.2.0 ./~/d3-array from ./~/d3-array\src\index.js
Check how you can resolve duplicate packages: https://github.com/darrenscerri/duplicate-package-checker-webpack-plugin#resolving-duplicate-packages-in-your-bundle
Child html-webpack-plugin for "index.html": 1 asset Entrypoint undefined = index.html [KTNU] ./node_modules/html-loader!./templates/partial.html 567 bytes {0} [built] [YuTi] (webpack)/buildin/module.js 497 bytes {0} [built] [aS2v] ./node_modules/html-webpack-plugin/lib/loader.js!./templates/template.html 1.22 KiB {0} [built] [yLpj] (webpack)/buildin/global.js 489 bytes {0} [built] + 1 hidden module
尽管有一些警告消息，JupyterLab 现在可以毫无问题地生成绘图图形：