问git.exc.InvalidGitRepositoryError？

python3 train.py --policy rgl
Traceback (most recent call last):
  File "train.py", line 255, in <module>
    main(sys_args)
  File "train.py", line 79, in main
    repo = git.Repo(search_parent_directories=True)
  File "/home/star/.local/lib/python3.8/site-packages/git/repo/base.py", line 224, in __init__
    self.working_dir: Optional[PathLike] = self._working_tree_dir or self.common_dir
  File "/home/star/.local/lib/python3.8/site-packages/git/repo/base.py", line 307, in common_dir
    raise InvalidGitRepositoryError()
git.exc.InvalidGitRepositoryError