`encoding` parameter in `logging.basicConfig` breaks Python 3.8

[icyblade]

In #303, encoding='utf-8' is passed to logging.basicConfig. This change breaks Python 3.8 because encoding parameter is not available until Python 3.9.

Reference: https://docs.python.org/3/library/logging.html#logging.basicConfig

[merrymercy]

Could you send a fix?

[DearChuck]

It is a bug

[CiaoHe]

Just delete encoding=xxxx works