API 重复翻译相同文件，报错

[haowaiwai]

Before you asking

• I have searched the existing issues
• I spend at least 5 minutes for thinking and preparing
• I have thoroughly and completely read the wiki.
• I have carefully checked the issue, and it is unrelated to the network environment.

Environment

- OS:docker
- Python:3.12.9
- pdf2zh:1.9.2rc0

Describe the bug

curl http://localhost:11008/v1/translate -F "[email protected]" -F "data={\"lang_in\":\"en\",\"lang_out\":\"zh\",\"service\":\"ollama\",\"thread\":4}"

第一可以正常翻译
第二次执行，查询状态：{"state":"FAILURE"}