How are you running AnythingLLM?

Docker (local)

What happened?

I am uploading two documents, one of them succeeds but the other one fails with a failure log message of:
[collector] info: -- Working 软件设计师教程第5版.pdf --
[backend] info: [Event Logged] - document_uploaded
[collector] error: Resulting text content was empty for 软件设计师教程第5版.pdf.

From the logs, I can't directly deduce what's causing the problem

Initially I wondered if the document was too big, and when I compressed the failed one to the same size as the successful one (16M), it still failed the same way.

Does anyone know what is causing this? How can I circumvent this error?

Are there known steps to reproduce?

No response