I have 2 phones with Syncthing. One phone with Android 13 and another one with Android 8.
I don’t know if it’s related to the Android version, with the latest upgrade:
Syncthing works fine on the Android 13 phone.
Syncthing stopped working on the Android 8 phone.
Does the Android app start at all? If yes, can you access the Web GUI (from the left slide-out menu)? Please post screenshots of what you can see on the phone.
As far as I know this is a quic-go specific error, so it could be a bug or incompatibility somewhere in that library.
And since we recently bumped it from 0.39 to 0.40 and 0.41, it wouldn’t surprise me if the issue lies there.
As a work-around you can prob enforce tcp (set the Sync Protocol Listen address to tcp://0.0.0.0:22000) or change the quic-priority in the advanced settings (prob lesser preferred). If not plain downgrading for now.