Getting 404 GET /contents.js with Jupyter Notebook

user_8545485 0
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I am unable to run Jupyter Notebook from my local directory due to a 404 Not Found error.

Below is what I get from cmd when running

[W 11:14:30.524 NotebookApp] 404 GET /contents.js (::1) 30.000000ms referer=http://localhost:8888/tree?
token=e49e29c7dcac8e08dc2da577daf592dc2fea9dd958adee64

The web page opens normally yet nothing showed up, and below is what I get form my browser's console

enter image description here

This is not my first time using Jupyter Notebook; it works all fine before, and this issue just appeared suddenly since yesterday, though I do not remember doing anything that can potentially crash the application. I have tried re-install Anaconda yet it didn't help. Anyone knows how to solve it? Thanks!

anaconda jupyter-notebook python
3 Answers

I had the same issue today and I can see that maybe the solution is the same for you. I don't know for which reason happens, but realize that in the url that forms the jupyter notebook when you do the command, between '/tree' and the '?token...' there is any slash '/' as there is in the logs that tell you how to open the notebook.

So the solution I found is to add the / like this: /tree/?token=...

I think this should be resolved in a next jupyter update.

user_150986480

In my case, it was caused by an upgrade of my browser (Chromium-based). Therefore, downgrading solved the problem.

user_160882440

In my case issue was resolved, just by changing the token value in the URL, as your URL is:

http://localhost:8888/tree?token=e49e29c7dcac8e08dc2da577daf592dc2fea9dd958adee64

Change it to:

http://localhost:8888/tree? token=e49e29c7dcac8e08dc2da577daf592dc2fea9dd958adee61

or change any value in token you will have your jupyter working. I don't know what but there is a bug in the data storage of tokens in the server-side of the Jupyter environment.

user_133265350
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