When copying content from Word, an error message will appear if the content contains headings <img width="346" alt="图片" src="https://github.com/user-attachments/assets/63fb6cd5-4183-469a-a6d3-0da772a45083"> <img width="1000" alt="图片" src="https://github.com/user-attachments/assets/149734c4-f42e-4751-91ef-6f58dafa9235">