VALIDATION ERROR - ADD MODEL IN LABEL STUDIO

When I want to add the model inside label studio it tells me that

Successfully connected to http://166.82.51.173:9090/ but it doesn't look like a valid ML backend. Reason: 500 Server Error: INTERNAL SERVER ERROR for url: http://166.82.51.173:9090/setup.
Check the ML backend server console logs to check the status. There might be
something wrong with your model or it might be incompatible with the current labeling configuration

I am working with label studio 1.8.1

Start with the ML backend server console logs and the /setup request while reproducing the connection from Label Studio 1.8.1. Confirm the model and labeling configuration involved, then document the cause of the 500 response and verify that the backend is accepted as a valid ML backend.

Written by the indexing model from the issue text.