Pocket Reform freezes

My Pocket Reform freezes after some time i.e. the screen is still lit but the system won’t respond to pressed keys or the trackball. Sometimes it would first behave strangely i.e. I wouldn’t be able to launch new apps, when I start programs it in the terminal I get I/O errors, the filesystem is set to emergency_ro. This might happen after a few minutes but I also had the machine run for almost two hours todays.

I upgraded to the new Pocket Reform Charger Module and the new Headset / Switch Board. So I cannot rule out a hardware defect but I believe the system was stable after the modification. I keep my system updated so I can’t rule out a problem with some update. Also the filesystem might be damaged due to the freezes.

I did try to use dmesg and journalctl to get some ideas about what is going on but I am not experienced enough to know what I should be looking for. There are also errors during boot, see attached - but I am not sure whether this is expected. The systems stops during boot so I can enter the password for the encrypted SSD. Also the screen at shutdown shows some errors.

Any idea what to do?