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Jupyter Scheduler server extension not found #370
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I'm running into this same issue. The extension is installed and enabled but this warning message appears and Jupyter-Scheduler doesn't appear in the launcher (or in the notebook nav bar). I can also confirm Jupyter-Scheduler was installed "in the same environment in which you run JupyterLab." I've enabled jupyter-scheduler == 1.3.1 |
@nev7n @iameskild |
Hi @3coins, I was trying to run this on a much older version of JupyterHub and once I set Thanks for following up!! |
@iameskild |
@iameskild thanks for your response - it turns out we were also running an old version of JupyterHub (1.4.2), and after updating to JupyterHub==4.0.0 it resolved the issue. We had a separate issue with a Javascript exception (calling method split on undefined, seemed to be related to trying to fetch file name from widget) when trying to add a schedule to a notebook by using right-click menu but resolved that by downgrading jupyterlab from 4.0.0 -> 3.6.3. |
Hi all! I keep getting the same issue. I pip installed jupyter_schedule in the base environment which is where I have everything else installed and I keep getting the same error. I noticed that even after pip installing this, for some reason it keeps saying this is not installed when looking at the server extension list. Also anytime I try to pip install jupyter_scheduler, it keeps telling me the requirement is satisfied even after I try pip uninstalling and then re-installing. Please help. Thank you. Regards, |
Same problem here shows enabled OK but getting the server extension not found popup
|
Hey folks, this error popup appears whenever the Scheduler lab extension (running in the browser) is unable to receive a response from the Scheduler server extension when JupyterLab is opened in the browser. As this is a very generic issue with several users suggesting different causes, the correspondence here is unlikely to be of benefit to future users. Therefore I will close this issue. For us to help, we need a reproducible example, i.e. some instructions on how to reach the broken state that you are encountering. For example, you can export your Conda environment and include it in your issue:
I also recommend testing Scheduler in a fresh Conda environment. If Scheduler works in this environment but fails in the previous one, then it is most likely an issue with your environment, not Scheduler. This can happen if you To test Scheduler in a fresh Conda environment:
Finally, I also recommend listing the dependencies of
Happy Thanksgiving! Feel free to keep the conversation going here until you are able to reproduce the bug and file a separate issue on GitHub; we will still reply to comments in closed issues. |
Description
After installing jupyter-scheduler==1.3.1 with pip we get the following error on starting JupyterLab:
I've tried running the suggested commands and it reports the extensions are both enabled:
I'm guessing this is related to a backend request failing with a 404 to (URL domain sanitised):
Not sure why this URL is returning a 404, I would assume the enabled server extension should handle this endpoint?
Reproduce
Expected behavior
Jupyter scheduler extension available after install
Context
Browser and version:
Google Chrome: Version 112.0.5615.140 (Official Build) (64-bit)
Jupyter Server version:
1.24.0
Troubleshoot Output
Command Line Output
Browser Output
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