Some problems about jupyterhub deployment environment

I confirm that I have configured configurable configurable http-proxy. Why keep reporting this error?

here is my config of

and i can execute configurable-http-proxy

Hi! Please can you give us enough information to reproduce your problem? E.g. how did you install JupyterHub and the other components, what operating system are you using, how is it setup, etc.

Thanks. I can successfully run the application mode, because my “configurable-http-proxy” service is not enabled.