NameError: name 'main_file' is not defined

[LeiShi1313]

2022-05-04 15:19:43.543 | WARNING | differential.utils.mediainfo:get_resolution:183 - 无法获取到视频的分辨率
2022-05-04 15:19:43.544 | ERROR | main::8 - An error has been caught in function '', process 'MainProcess' (933041), thread 'MainThread' (140306609316480):
Traceback (most recent call last):

File "/home/lei/.pyenv/versions/3.9.10/bin/dft", line 8, in
sys.exit(main())
│ │ └ <function main at 0x7f9baca2bc10>
│ └
└ <module 'sys' (built-in)>
File "/home/lei/.pyenv/versions/3.9.10/lib/python3.9/site-packages/differential/main.py", line 24, in main
REGISTERED_PLUGINSplugin.upload()
│ │ └ {'generate_nfo': False, 'make_torrent': True, 'screenshot_count': 0, 'optimize_screenshot': 'true', 'image_hosting': <ImageHo...
│ └ 'NexusPHP'
└ {'nexusphp': <class 'differential.plugins.nexusphp.NexusPHP'>, 'nexus': <class 'differential.plugins.nexusphp.NexusPHP'>, 'ne...
File "/home/lei/.pyenv/versions/3.9.10/lib/python3.9/site-packages/differential/plugins/base.py", line 1079, in upload
self._prepare()
│ └ <function Base._prepare at 0x7f9bab4a6ee0>
└ <differential.plugins.nexusphp.NexusPHP object at 0x7f9bab411be0>
File "/home/lei/.pyenv/versions/3.9.10/lib/python3.9/site-packages/differential/plugins/base.py", line 796, in _prepare
self._screenshots = self._get_screenshots()
│ │ │ └ <function Base._get_screenshots at 0x7f9bab4a6e50>
│ │ └ <differential.plugins.nexusphp.NexusPHP object at 0x7f9bab411be0>
│ └ []
└ <differential.plugins.nexusphp.NexusPHP object at 0x7f9bab411be0>
File "/home/lei/.pyenv/versions/3.9.10/lib/python3.9/site-packages/differential/plugins/base.py", line 765, in _get_screenshots
temp_dir = self._make_screenshots()
│ └ <function Base._make_screenshots at 0x7f9bab4a6dc0>
└ <differential.plugins.nexusphp.NexusPHP object at 0x7f9bab411be0>
File "/home/lei/.pyenv/versions/3.9.10/lib/python3.9/site-packages/differential/plugins/base.py", line 719, in _make_screenshots
duration = get_duration(self._mediainfo)
│ │ └ <pymediainfo.MediaInfo object at 0x7f9bad5c4f70>
│ └ <differential.plugins.nexusphp.NexusPHP object at 0x7f9bab411be0>
└ <function get_duration at 0x7f9babeedee0>
File "/home/lei/.pyenv/versions/3.9.10/lib/python3.9/site-packages/differential/utils/mediainfo.py", line 174, in get_duration
logger.error(f"未找到视频Track，请检查{main_file}是否为支持的文件")
│ └ <function Logger.error at 0x7f9bacb09550>
└ <loguru.logger handlers=[(id=0, level=10, sink=), (id=1, level=5, sink='test.log')]>

NameError: name 'main_file' is not defined