Jupyter Notebook not saving: ‘_xsrf’ argument missing from post

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I’ve been running a script on jupyter notebooks for about 26 hour; I haven’t really been using my computer for anything else, but it needs to run this program that will take ~30 hours to complete. At about 21 hours in, it stopped saving and my terminal had this:

403 PUT /api/contents/[file.ipynb] (::1): '_xsrf' argument missing from POST

where [file.ipynb] is the location of my jupyter notebook. It also says:

'_xsrf' argument missing from post

in the top right part of the notebook again. The program is still running and I don’t want to restart jupyter notebook and have to run the program again, as I have a deadline, is there anything else I can do?

I’m using google chrome, but I don’t have the LastPass extension or any ‘%’ characters in my code, as another post suggested.

Thanks for any help!


Solution

The easiest way I found is this:

https://github.com/nteract/hydrogen/issues/922#issuecomment-405456346

Just open another (non-running, existing) notebook on the same kernel, and the issue is magically gone; you can again save the notebooks that were previously showing the _xsrf error.

If you have already closed the Jupyter home page, you can find a link to it on the terminal from which Jupyter was started.

Source: StackOverflow.com

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