I've dealt with this problem many times. Your cables are out of alignment with your motor.

Retract the sunroof partially, pull the sunroof motor and try to "re-align" it manually (grip the roof and shift it to get it back into alignment. I have had to do this many times. It may take a couple of tries and you'll have issues getting the motor back "just-right" as it has a dead spot that corresponds to the fully-closed position of the sunroof. Getting it all just right is a PITA. Be sure to check the cables when you remove the motor. IMHO these do not just "slip" out of alignment unless somthing has happened - either faulty service or a damaged cable.

ALternatively, get it as close as possible to the center/closed position. Pull the motor (don't run it while detached. Then take a flat-head screwdriver and "push" on the cables visible in the motor hole until you get the roof to close cleanly. Doing this allows to you move each track independently to get them back in sync. I've had less success this way and you risk damaging your coils. The previous method has generally been more successful for me. it's easy to pull the motor, run it for a sec and re-install to get it back to the "sweet-spot"

Good Luck!