When updating a snap to use core24, I ran into one of the syntax changes and received the following error message: $ snapcraft snapcraft internal error: ValidationError(model='SnapcraftBuildPlanner', errors=[{'loc': ('architectures', 0), 'msg': 'str type expected', 'type': 'type_error.str'}, {'loc': ('architectures', 0, 'run-on'), 'msg': 'extra fields not permitted', 'type': 'value_error.extra'}]) Full execution log: '/home/james/.local/state/snapcraft/log/snapcraft-20240517-140421.326386.log' Checking the full execution log showed the following near the bottom: 2024-05-17 14:04:21.444 pydantic.error_wrappers.ValidationError: 2 validation errors for SnapcraftBuildPlanner 2024-05-17 14:04:21.444 architectures -> 0 2024-05-17 14:04:21.444 str type expected (type=type_error.str) 2024-05-17 14:04:21.444 architectures -> 0 -> run-on 2024-05-17 14:04:21.444 extra fields not permitted (type=value_error.extra) It seems like a bug that the more user friendly presentation of the error would be saved for the log file, and the more obscure form printed to stderr.