[Bug]: Use ppt file, raise File is not a zip file error

[23233]

Is there an existing issue for the same bug?

• [X] I have checked the existing issues.

Branch name

main

Commit ID

?

Other environment information

rag 0.5.0版本 
docker compose运行

Actual behavior

Expected behavior

成功解析

Steps to reproduce

上传一个.ppt文件

Additional information

test ppt.zip

[fire717]

Maybe not support .ppt but .pptx?

[KevinHuSh]

Yes.