TypeError: expected str, bytes or os.PathLike object, not NoneType

问题：TypeError: expected str, bytes or os.PathLike object, not NoneType
line 76, in join path = os.fspath(path)
找到对应文件代码

def join(path, *paths):
    path = os.fspath(path)

问怎么找这个路径还是类型的问题

os.fspath函数参数不能为None，你打印一下path变量，应该是None
根据程序上下文，改下程序吧