Hops submodel issues detection

Hi All, I am a new user of hops functionalities. I manage to use hops when creating submodels made from existing gh components and with GhPython script inside. Nevertheless, I have sometimes difficulties to debug especially to identify where the problem is coming from when the issue is detected at hops model level.

Does someone has a trick to quickly identify on which gh component of the submodel, the problem is coming from?

Thank you in advance