Error creating another session on POS (the next session)
After closing the current session, when I want to create the next session I have the following error message: "A session can be used as previous only once." Even if the previous session has not already been used.
I think it's because the 'previous_session' field has the 'readonly' attribute set to True. Putting the 'readonly' in the 'states' attribute seems to solve the issue.