Deal with existing validation errors

[justmars]

Validation needed detail=PosixPath('/Users/mv/code/corpus/statutes/ra/9486/details.yaml'); e=ValidationError(model='StatuteUnit', errors=[{'loc': ('content',), 'msg': 'ensure this value has at most 250000 characters', 'type': 'value_error.any_str.max_length', 'ctx': {'limit_value': 250000}}])
Generic exception on insertion: e=SyntaxWarning("idx='1918' invalid serial of StatuteSerialCategory.RulesOfCourt")