ParserError is pendulum.parsing.ParserError.
maya uses pendulum to parse the string.
pendulum will use dateutil to parse the string when pendulum's parsing fails and strict=False (the default in maya).
Therefore, internationalized parse support should be added to pendulum or possibly dateutil.
2019年5月13日 a common format in Chinese dates, but print(maya.parse('2019年5月13日')) will except ParserError