Google Colab can't open text notebooks

[mwouts]

Tring to open a .md notebook like e.g. http://colab.research.google.com/github/mwouts/itables/blob/main/docs/quick_start.md fails with this error:

Notebook loading error
The file has been corrupted or is not a valid notebook file.
SyntaxError: JSON Parse error: Invalid number
jN@https://ssl.gstatic.com/colaboratory-static/common/3411ed55c999b983576f3a2ff2cdaece/external_binary.js:2433:169
@https://ssl.gstatic.com/colaboratory-static/common/3411ed55c999b983576f3a2ff2cdaece/external_binary.js:2416:520
ya@https://ssl.gstatic.com/colaboratory-static/common/3411ed55c999b983576f3a2ff2cdaece/external_binary.js:16:65
@https://ssl.gstatic.com/colaboratory-static/common/3411ed55c999b983576f3a2ff2cdaece/external_binary.js:14:197
@https://ssl.gstatic.com/colaboratory-static/common/3411ed55c999b983576f3a2ff2cdaece/external_binary.js:17:53
b@https://ssl.gstatic.com/colaboratory-static/common/3411ed55c999b983576f3a2ff2cdaece/external_binary.js:17:313

I will reach out to the Colab team to see what we can do about it.