[BUG]最新的Mistral-Small-3.1-24B-Instruct-2503模型输入图片必现报错：Message content must be normalized

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File "/usr/local/lib/python3.12/dist-packages/mistral_common/tokens/tokenizers/sentencepiece.py", line 609, in encode_system_message
    assert isinstance(message.content, str), "Message content must be normalized"

[15626471095]

删除掉模型的系统提示词后问题恢复