Common eBike problems and solutions

Hey everyone!

Been riding my Aventon Level 2 for about six months now, mostly commuting and some light trail riding – probably put about 800 miles on it already. It's been fantastic, but I'm curious about what common issues other eBike owners have run into. Beyond the usual flat tires, what are some recurring problems you've faced with your eBikes (motor, battery, controller, etc.) and, more importantly, what solutions or fixes did you find? Looking forward to hearing your experiences!