TypeError: 'builtins.safe_open' object is not iterable

[jpeig]

/vllm/vllm/model_executor/weight_utils.py", line 243, in hf_model_weights_iterator
    for name in f:
TypeError: 'builtins.safe_open' object is not iterable

I am using the main branch build.
Triggers when using /openai/api_server.py and loading the model weights for the engine object (AsyncLLMEngine)

Traceback:

Traceback (most recent call last):
  File "runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "api_server.py", line 644, in <module>
    engine = AsyncLLMEngine.from_engine_args(engine_args)
  File "async_llm_engine.py", line 486, in from_engine_args
    engine = cls(parallel_config.worker_use_ray,
  File "async_llm_engine.py", line 269, in __init__
    self.engine = self._init_engine(*args, **kwargs)
  File "async_llm_engine.py", line 305, in _init_engine
    return engine_class(*args, **kwargs)
  File "llm_engine.py", line 110, in __init__
    self._init_workers(distributed_init_method)
  File "llm_engine.py", line 142, in _init_workers
    self._run_workers(
  File "llm_engine.py", line 700, in _run_workers
    output = executor(*args, **kwargs)
  File "worker.py", line 70, in init_model
    self.model = get_model(self.model_config)
  File "model_loader.py", line 98, in get_model
    model.load_weights(model_config.model, model_config.download_dir,
  File "mistral.py", line 307, in load_weights
    for name, loaded_weight in hf_model_weights_iterator(
  File "weight_utils.py", line 243, in hf_model_weights_iterator
    for name in f:
TypeError: 'builtins.safe_open' object is not iterable

[WoosukKwon]

This was just fixed. Please update the main branch!