2003 Ford Fiesta 4500 rds eon CD player

Hi, hope yopu could shine alittle light on this for me, my cd player isnt playing aany of my cd's. It trys to play them and somethimes is even manages to play the first song but then it kinda crashes and displays the error message e24. Ive already tried cleaning it with one of those cd cleaning disks and ive also tried disconnecting the battery casue I was told that could help but sadly it not made any change. Any ideas on how it could be fixed. Thanks