Playing but no audio in random parts



So I was at a church service with my guitar and beat buddy.
Tap the pedal to play the first song. It was going good for maybe 15 seconds, then suddenly I don't hear drums for 1 measure/bar, then it comes back again for 1 measure, then no sound again, but I see the tempo bar thing is running across the screen so I know it's not stopped. The audio was cutting on and off so I just killed the volume for the entire first song. After the first song ended, I powered down the pedal and connected it...

Playing but no audio in random parts