jupyterhub
Spawn error, but service starts
I get a spawn error when restarting jupyterhub:
$ sudo supervisorctl restart jupyterhub
jupyterhub: stopped
jupyterhub: ERROR (spawn error)
Even though I get this error, JupyterHub is started successfully; this is also evident from the logs. So what is this error all about?
Getting the exact same thing. And when I login to any account I get the following message in my browser:
Cannot find template: "403.html"
In "/opt/conda/share/jupyter/lab/static"
I was having the 403 error as well. After rolling back my notebook and lab version numbers, I found a simpler way: I could still login to the hub manually via the links: https://....edu/user/$USER/hub https://....edu/user/$USER/tree where $USER is my login id.
I then restarted my own server and could log in and launch the labs.
Are you using OS X?
I tend to have the same issue after I reboot my Macbook and it restores processes that were running prior to the reboot.
Running ps -ef | grep jupyter shows a few phantom python jupyter processes that need to be terminated.
kill -10 <pid of phantom process> for each offending PID will terminate them.
Then running jupyter lab should work smoothly.
I also get this error:
Cannot find template: "403.html" In "/opt/conda/share/jupyter/lab/static"
I want to connect to JupyterLab through GCP. I have checked all above solutions, none worked for me and I still get the same error. Any other ideas on how to resolve this issue?
Have you found any solution to this problem @NixaV ? I suddenly got this error on GCP as well, it was working fine
