INFO 02-27 11:35:25 [__init__.py:240] Automatically detected platform rocm.
/home/lst/DeepSeek-OCR2-vllm/deepseek_ocr2_server.py:476: DeprecationWarning: 
        on_event is deprecated, use lifespan event handlers instead.

        Read more about it in the
        [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
        
  @app.on_event("shutdown")
Traceback (most recent call last):
  File "/home/lst/DeepSeek-OCR2-vllm/deepseek_ocr2_server.py", line 513, in <module>
    main()
  File "/home/lst/DeepSeek-OCR2-vllm/deepseek_ocr2_server.py", line 503, in main
    os.environ["CUDA_VISIBLE_DEVICES"] = gpu_id
NameError: name 'gpu_id' is not defined