runtime error

Exit code: 1. Reason: The cache for model files in Transformers v4.22.0 has been updated. Migrating your old cache. This is a one-time only operation. You can interrupt this and resume the migration later on by calling `transformers.utils.move_cache()`. 0it [00:00, ?it/s] 0it [00:00, ?it/s] Traceback (most recent call last): File "/home/user/app/app.py", line 7, in <module> if not os.path.exists(model_path): NameError: name 'os' is not defined

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