The drive blade which drives the ice dispenser is stripped out and lets the auger spin with out moving ice forward. To replace part you have to remove auger just remember the order the crushing blades came off.
You may have to replace auger if worn.
Go to www.appliancepartspros.com
select diagram #4 ice container part #17
Drive blade
Part Number:
AP3959143 made by FRIGIDAIRE about $15
Good Luck