[john70t]

There should be a hex-key at the bottom in the center of motor underneath, to manually turn it when it "hummmms" instead..
Something is stopping the motor.

Long needle nose pliers will help pull out the offending objects.
Take your time.
Put blue tape over the switch in the meantime.

Always use a basket strainer.

In this case, you may have to drop the "P-Trap" of the drain loop and clean that local part out. Bucket underneath Two rings to unscrew. Easy.
The down pipe after that may need to be snaked as well.
You might need roto-rooter or other to inspect and carefully clear it to the street.