It is dead locked and the actuator is dead or needs re-adjusting.
Don't force it. Get someone to use the key to local and unlock the passenger door (ie on and off the full deadlock position) a few times whilst you pull up gently/jiggle on the button form inside until it frees up, then you can open the door, carefully remove the card (beware brittle fasteners) and see if the actuator is working/adjust it's mounting position if it is or repair/replace if not. Only other problem it could be is the driver's microswitch (tho unliklely as this is a common problem many see). If it won't free you will have to remove the door card with the door closed- difficult but you can search this forum for the procedure to do this.