trying to monitor a button press on GPIO19 which has an offset 40, but getting the error in the title.
Switched between kernels but made no difference.
http://ix.io/4cFr
After switching the kernel
http://ix.io/4cGd
Not sure if this is related, but might help with the troubleshooting
https://archlinuxarm.org/forum/viewtopic.php?f=65&t=14423