Errore: 'LlamaForCausalLM' object has no attribute 'max_seq_length'

hi guys, i have a problem.
I finetuned llama 3.2 with unsloth, but at the end i would like to do a comparison between my finetuned model and a different model, but it comes always with this error.

in details i'm trying to upload medalpaca

    model = AutoModelForCausalLM.from_pretrained(
            "medalpaca/medalpaca-7b",
            trust_remote_code=True,
            device_map='auto',
            torch_dtype=torch.float16
        )