pdf无法转换

您好，
pdf转markdown 会报错：

<img width="757" height="281" alt="Image" src="https://github.com/user-attachments/assets/1d521355-785a-4152-bdab-b5572bc22bf6" />

<img width="347" height="191" alt="Image" src="https://github.com/user-attachments/assets/82453295-bae7-49df-84bc-38dede5c0964" />