我在一个对话中最初使用mimo-v2.5 pro模型，后面因为需要分析图片就切换了mimo-v2.5，现在切换回2.5pro模型后报错误：There’s an issue with the selected model (mimo-v2.5-pro). It may not exist or you may not have access to it. Run /model to pick a different model.有佬可以解释一下吗