I am running grapheneos and got nc from fdroid if it matters. I also use nc on my local network only.
I’ve run into this when one person on a network is using Linux or Mac, and another Windows. They have different filename rules.

That whole thing is incoherent
I think that’s the point (.txt)
So true tho
I’d rather be played for a relative fool.
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.
I stopped using nextcloud after syncing suddenly broke for me, but in the app on my phone I could pull up the list of files with sync errors. It should be somewhere in the sync setting section.
Probably is .htaccess file. Or, a file with ~ in the filename. I switched to syncthing because of this shit.
Another thing to check is the file path. Most systems abide by a 255 character limit and that limit can be crossed by parent folders having too many words in them.




