1999 Ford Fiesta car locks

Electrical problem
1999 Ford Fiesta 4 cyl Two Wheel Drive Manual

car key is a power key that opens all doors when you insert and turn the key.

The problem is that when you insert the key in the lock of the drivers door it will turn but not open any of the locks.
You can close all locks from drivers door lock.

All doors open and close from front passenger side door lock.


Question.-what do you think is wrong with the lock of the drivers door?

thanks in advance.