Proton Drive "Unknown Error"

[ReaderGuy42]

I'm trying to set up a sync between my Proton Drive and my Linux Mint PC. I set up a folder, and now after a few minutes of "awaiting sync check" I get this error:

I didn't cut off any info, that's the end of the message.

Any ideas?

Thanks!

[ZenithMonk]

I just wanted to report a similar issue with Proton.
Here is mine :

thread 'main' panicked at src/launch.rs:1809:34:
called  on an  value: SystemTimeError(3600s)
stack backtrace:

Yesterday, everything just worked fine, today it broke.
In my case, in might be due to uploading a Cryptomator vault. (the other day it were "normal" files).
It is not due to Proton Drive itself, as directly uploading the same vault on the website application works properly.