1997 Odyssey drivers side door makes a noise

1997 Odyssey drivers side door makes a noise everytime I unlock it. I think it is the lock mechanism but not sure. I pulled the door off and the noise is coming from the white lock box under the outside lock area. No noise when I lock it, only when I unlock it. It rattles and then stops, still unlocks but it is loud.

It only happens with the drivers side door. How can we fix this? Or do we need to replace that piece (not sure what it is called) thanks so much. Tim