Got the same issue when de-boarding, after crew deboarded following crash report:
couatl v5.0 (build 5984)
panic log started on Thu Jul 31 18:39:40 2025
problem raised by addon <unknown>
[02:59:08.063] Traceback (most recent call last):
[02:59:08.063] File ".\common\fsm.py", line 73, in executeDoFuncToCompletion
[02:59:08.063] File ".\GSX\assistanceServices\__init__.py", line 1046, in do
[02:59:08.063] File ".\GSX\assistanceServices\__init__.py", line 523, in createPassengers
[02:59:08.063] AttributeError: type object 'PassengerDescriptor' has no attribute 'CLEANING_CREW'
{'Airport': 'LPPT', 'User Pos': (38.76458828131151, -9.137335145896657, 107.154 m, 2.84391 m, 167.59239870598788, 0.0007950433341334874, 0.001745329238474369, -0.0003274801810830925, 3.18211187210083, 1.0), 'Requested parking services to': 'Parking 205'}
Maybe something to do with the attribure "Cleaning crew"?