Solve the problem of template_paths related errors when using Jupyter Notebook after installing nbextensions

1. Problem description

After installing nbextensions in the virtual environment, a large number of template_paths errors appear when opening jupyter notebook

Although it doesn't affect my use, it is still uncomfortable for me who is a bit obsessive-compulsive.

2. One wave of ups and downs and another wave

According to the information I searched on the Internet, I probably determined that the version problem of nbconvert is greater than 6.0.

So I referred to several methods on the Internet and tried it.

The first method: enter the Lib\site-packages\nbconvert\exporters folder in the corresponding environment and open the templateexporter.py file, try to replace all template_paths with template_path, but found that the problem has not been solved.

Second method: reinstalled the nbconvert module

I uninstalled the previous version directly, and then installed the 5.6.1 version

pip uninstall nbconvert

pip install nbconvert==5.6.1

But there are a lot of other errors

Open the corresponding .ipynb file and report an error 500 Internal Server Error

I also checked a lot of ways to solve 500 Internal Server Error, basically nothing more than reinstalling nbconvert and updating

For example: pip install --upgrade --user nbconvert

But I still have a problem doing this

3. The final method to try

I did not use the pip command this time but the conda command and it was fine, and the previous template_paths related errors no longer appeared

The command I ended up using was

conda install nbconvert==5.4.1

The version 5.4.1 is installed

The result is as follows

There is still another error report for the time being, but it is much better than the previous large number of error reports. After solving this last bug, it will be updated