Pentax ME Super shutter getting stuck

Recently bought a Pentax ME Super and everything works perfectly except for the shutter. Every few shots the shutter button gets stuck for a few seconds which means that the photo ends up completely overexposed and blank. On a roll of 36, 9 exposures came back blank. It happens at random there’s no like sequence to it. I’ve swapped the batteries incase it was because of them but it isn’t.

Is there any way to fix it?