Malformed JSON in request body when uploading PDF files.

[chinouvm]

Describe the bug

When I try to upload three different PDF files (on my selfhosted instance) I get the message: "An error occurred while creating the note, please try again."
In the docker container logs I see this:

enclosed-1  | {"level":50,"time":1737995717121,"pid":1,"hostname":"037fba6384a8","namespace":"middlewares:error","error":{"status":400},"msg":"Malformed JSON in request body"}

enclosed-1  | {"level":30,"time":1737995717122,"pid":1,"hostname":"037fba6384a8","namespace":"app","status":500,"method":"POST","path":"/api/notes","routePath":"/api/notes","durationMs":902,"msg":"Request completed"}

I even tried uploading these files to the official instance on enclosed.cc but it is the same over there.

I found these browser errors on the enclosed.cc website (also on the selfhosted instance)

It points to this java blob (idk if it is helpful)
https://pastebin.com/RGQaE51i

What happened?

I expected it to successfully upload the files of course.

System information

Where did you encounter the bug?

Public app (enclosed.cc)