Unable to find calibre server opds

I am not able to connect to my calibre server. I can connect via browser

I am using (4142 is the port I use for my calibre server)

From my browser I can see the xml file, but on Panels I keep the having the error

Unable to find Server - Panels.OPDSServerServiceError error 8

I am using username and password.

OPDSServerServiceError error 8 is internetConnectionIsNotAvailable.

You might be having some connection issues. When the app emits this error is because it can’t even have access to make the server request.