How can i find what files are causing the problem? Opening the app shows everything normal
(lemmy.world)
I am running grapheneos and got nc from fdroid if it matters. I also use nc on my local network only.
Having just dealt with something similar from Linux to windows, I'm 97% sure this is the cause. Mine was a "same file name" issue because capitalization.
Also, it could be a temp file or hidden file that's created by a program, like the recovery files made by libreoffice/word. They sometimes use weird characters.