Solve the problem that jupyter-lab cannot be used after installing the plug-in (reinstalling the plug-in cannot be used)

Solution

1. Check the status of the plugin

Run in the code box of jupyter:

!jupyter labextension list

You can list all the plug-ins. For example,

you can see that jupyter-matplotlibthey appear both above and below. This is a current bug. Use the following method to solve it:

2. Directly delete the build_config.json file

Enter the code in the code editor of jupyter:

!jupyter lab paths

The display effect is as follows:

Look at the first directory /opt/anaconda3/share/jupyter/lab. After entering this directory, you can see:

cd /opt/anaconda3/share/jupyter/lab
cd settings
ls

There is a file:, build_config.jsondelete directly:

rm build_config.json

3. Restart jupyter-lab

If you are running jupyterlab, you need to shut down the jupyter server first, and then restart it, you will be prompted that you need to reload, click rebuild, and it will be ok when it is completed.