Drupal Piece not working

Hello,

I’m trying to use a connection with a simple Drupal list piece.

Everything works, if I configure things manually via basic auth HTTP request.
If I use the Drupal Pieces, it isn’t working.

The URL for the connection needs to include the domain only?
If I add my JSON endpoint, I get an issue.
Possible that the endpoint URL is hardcoded in the ap connection?