Python 2.7.18 after upgrade to latest version v0.9.10, ```py import json5 import codecs config = {"foo": 'bar'} with codecs.open('config1.json', 'w', encoding='utf-8') as f: json5.dump(config, f, indent=4, quote_keys=True, trailing_commas=False, ensure_ascii=False) ``` an error occurred as title