Biometric rejected !!!

I went to my biometric appointment on July 1
After 2 days I got mail by USCIS that it says: The FBI was unable to process your fingerprints. To continue processing your application, petition, or request, U.S. Citizenship and
Immigration Services (USCIS) must collect your biometrics again. This will be completed at no additional expense to you. Please appear at the below Application Support Center (ASC) at the date and time
specified.

They gave me another appointment for July 23

What Im suppose to do ? Its not my fault , they hold my hand and they do the finger prints :(