Door bell button gets stuck on and rings intermittently. Solution?

Door bell works great except the button (round black) gets stuck in from time to time. So every now and then the door bell will ring but obviously no one is there…
How can I fix this myself if at all? Is there a solution? Cheers.

I found that the screw was digging into the back of the doorbell causing this for me. I screwed the screw in a bit further to separate it from the device, it seems to touch the reset button I think. Maybe it’s the same issue?