[Q] Samsung Galaxy S3 NEO GT-9301I topic

hello everyone i need help yesterday i root my phone everything its ok today i put the cyanogen rom 11 all its ok but when i open it and try to go to my contacts i see an error saying android.process.acore has stopped and i cant open the camera plzzz help me ty:confused::confused::confused::confused::confuse d::confused::crying::crying::crying::crying::cryin g::crying: