Sub Zero Ice Maker Freezing Up

Sub Zero 590 - approx 23 years old.

Ice Maker issue - seems like some water overflowing and leaking into the dispenser, freezing up the thing from turning. I empty the dispenser, thaw it all out, put it back. Same thing - it will make ice, but overnight it freezes up again. I’ve attached a few pics.

Wondering if replacing the ice maker would solve this, or if it’s a problem beyond the ice maker.

Thanks,
Jack