diff --git a/vllm-v0.6.2/vllm/model_executor/model_loader/utils.py b/vllm-v0.6.2/vllm/model_executor/model_loader/utils.py
index 506bd29..6a41f9d 100644
--- a/vllm-v0.6.2/vllm/model_executor/model_loader/utils.py
+++ b/vllm-v0.6.2/vllm/model_executor/model_loader/utils.py
@@ -20,7 +20,7 @@ def set_default_torch_dtype(dtype: torch.dtype):
 
 def get_model_architecture(
         model_config: ModelConfig) -> Tuple[Type[nn.Module], str]:
-    architectures = getattr(model_config.hf_config, "architectures", [])
+    architectures = getattr(model_config.hf_config, "architectures", None) or []
     # Special handling for quantized Mixtral.
     # FIXME(woosuk): This is a temporary hack.
     mixtral_supported = [