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I created some jupyter notebooks with Google Colab, when trying to open them with Jupyter notebook in local with my mac, I frequently see this error message:

Notebook validation failed: {'type': 'string'} is not valid under any of the given schemas:
{
 "type": "string"
}

The notebook is saved, but the message is constantly popping up.

It seem that some texts are not validated, maybe because of accented strings.

I would like to know if there are some known causes and solutions. Thank you

Xiaoshi
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1 Answers1

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This is the problem due to nbformat Please follow this thread :

https://github.com/jupyter/nbformat/issues/166

update nbformat to 4.3.0.

conda install -c anaconda nbformat updated nbformat to this version, but conda install -c conda-forge nbformat installs/updates only version 4.2.0

Vibhor Malik
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