s02-normalize_messages执行报错

[OrvisShu]

    elif isinstance(msg.get("content"), list):
        clean["content"] = [
            {k: v for k, v in block.items()
             if not k.startswith("_")}
            for block in msg["content"]
            if isinstance(block, dict)
        ]

这段代码执行报错，无法将 block 类对象转成 dict，导致推理过程报错