The following error occurred when I was training the upernet_mpvit_base_160k_ade20k.py file with a single GPU.

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The following error occurred when I was training the upernet_mpvit_base_160k_ade20k.py file with a single GPU.
fatal: not a git repository (or any parent up to mount point /)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
Traceback (most recent call last):
File "./tools/train.py", line 176, in
main()
File "./tools/train.py", line 165, in main
train_segmentor(
File "/export/home/rny/SegNeXt-main/mmseg/apis/train.py", line 110, in train_segmentor
cfg.device,
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/mmcv/utils/config.py", line 510, in getattr
return getattr(self._cfg_dict, name)
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/mmcv/utils/config.py", line 48, in getattr
raise ex
AttributeError: 'ConfigDict' object has no attribute 'device'
ERROR:torch.distributed.elastic.multiprocessing.api:failed (exitcode: 1) local_rank: 0 (pid: 2698) of binary: /export/home/rny/.conda/envs/openmmlab/bin/python
Traceback (most recent call last):
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/runpy.py", line 87, in _run_code
exec(code, run_globals)
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/torch/distributed/launch.py", line 193, in
main()
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/torch/distributed/launch.py", line 189, in main
launch(args)
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/torch/distributed/launch.py", line 174, in launch
run(args)
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/torch/distributed/run.py", line 715, in run
elastic_launch(
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/torch/distributed/launcher/api.py", line 131, in call
return launch_agent(self._config, self._entrypoint, list(args))
File "/export/home/rny/.conda/envs/openmmlab/lib/python3.8/site-packages/torch/distributed/launcher/api.py", line 245, in launch_agent
raise ChildFailedError(
torch.distributed.elastic.multiprocessing.errors.ChildFailedError:
SegNeXt-main in line 9 is the code for another article.
How do I solve this problem?