"conda update anaconda" broke jupyter-lab notebooks by deleting nbformat.v4.4.schema.json file from /home/.../anaconda3/lib/python3.8/site-packages/nbformat/v4 folder (Linux Mint 20.1, Python 3.8)

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Paulo Candeias

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Jan 14, 2021, 6:39:51 PMJan 14
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Hello,

the subject of this message pretty much summarises the issue (Linux Mint 20.1, Python 3.8).

After updating the anaconda packages through "conda update anaconda", nbformat was updated to version 5.1.1:

# Name                    Version                   Build  Channel
nbformat                  5.1.1              pyhd3eb1b0_0 

I was not able to open anymore my .ipynb files in JupyterLab. What i noticed was that all the .json files in folder

/home/.../anaconda3/lib/python3.8/site-packages/nbformat/v4

were deleted during the update process.

I had to fetch the "nbformat.v4.4.schema.json" file from the GitHub repository in order to be able open the .ipynb files again.

My environment looks like this:

# packages in environment at /home/.../anaconda3:
#
# Name                    Version                   Build  Channel
_anaconda_depends         2020.07                  py38_0  
anaconda                  custom                   py38_1  
anaconda-client           1.7.2                    py38_0  
anaconda-navigator        1.10.0                   py38_0  
anaconda-project          0.9.1              pyhd3eb1b0_1  
conda                     4.9.2            py38h06a4308_0  
conda-build               3.20.5                   py38_1  
conda-env                 2.6.0                         1  
conda-package-handling    1.7.2            py38h03888b9_0  
conda-verify              3.4.2                      py_1  

Best regards,
Paulo Candeias
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