Issue with Central Locking System on Chevrolet Aveo ecologic 2009

I’m experiencing a problem with the central locking system on my Chevrolet Aveo. When I use the remote key fob to unlock the car, it immediately locks itself again without me pressing any other buttons. To get inside, I have to open the driver's door right after unlocking. However, even with the door open, the system malfunctions: the doors keep locking and unlocking repeatedly until I close the door. Once it’s closed, the car locks itself again even with me inside. Additionally, if I try to open the door from the inside without the engine running, the alarm goes off.

I want to clarify that I don’t believe this issue is related to the battery of the remote key fob. Can you help me understand if this could be caused by the door actuator or another component, and provide guidance on how to resolve it?