Jupyterhub does not start server for new users

Hi everyone

I am fairly new to JupyterHub, and I have installed it from the following link:


When I add a new user using the admin UI, the server for the newly added user does not start and this error is displayed:

500 : Internal Server Error

Unhandled error starting server user_name

When I create a user on the Linux server where JupyterHub is installed, the user’s server starts without any error. When I added a user via the UI, the new user was not added to the Linux server users list.

My authenticator is:
c.JupyterHub.authenticator_class = ‘firstuseauthenticator.FirstUseAuthenticator’

Thank you in advance for your help!

That guide is quite old and out of date.

If you’re new to JupyterHub it’s easier to follow one of the guides, such as https://z2jh.jupyter.org/ or https://tljh.jupyter.org/