Doors Open Automatically

Hello friends, I am new among you, I am entering the issue directly, I have a 2001 model 306 vehicle, I lock the vehicle, after seconds, other doors are opened except for the driver's door. What is the reason? How do I fix this situation?

It does similar things when the key is left inside or when one of the doors is completely closed, which may include luggage. but this is the first time I have encountered the problem that the driver's door is locked and others remain open.

Thanks for your answer, I have met for the first time. I lock the car.

Thank you for taking the time and answering my teacher, but I saw that topic but there was no solution. I tried the solution options written in many forums, but it did not improve.

Maybe it would be good for him to think about friends. I hope that you will solve this problem again in the past.

Solved, the teacher made a cable oxidation inside the driver's door, so it sounded like that: D