Admin panel not accessible in jupyterhub 2.0.1

I am aware of the recent changes of the role-based access right, which was introduced in 2.0.0 version. But I noticed that in the recent update of 2.0.1, /home/admin# page returns me an almost blank page! Is this a bug in my configuration of my role or the admin panel is removed totally?
Currently my configuration includes:
c.Authenticator.admin_users = {“my user name”}

You wouldn’t happen to be proxying your JupyterHub behind Nginx would you? I ran into a similar problem and was able to resolve it by following the suggestions by the helpful users in this GitHub issue:

Thanks for your reply, but I do not use nginx as a reverse proxy!

I was able to fix this by stopping the jupyterhub server, deleting jupyterhub.sqlite, and then restarting the server.

I am facing the same problem with jupyterhub on kubernetes, do you know where is the jupyterhub.sqlite file or how to delete it.

Looks like the latest dev release fixed the admin page and permissions that I was experiencing and am using ingress-nginx on k8s. 3.0.0-0.dev.git.6126.h73773b85