I can see one of the slots where the spring should be, but i can't see the other end because a plastic covers it and i can't remove it.
Edit: I was able to open the door. It was a process because the lock mechanism which is made of plastic had broken, so i had to cut an opening in the door panel as i was not able to manually operate the mechanism using a wire. The plastic parts were broken and stuck. The outer handle and key don't work and the inner door handle was not raising the lever enough.
I had to replace the spring and bend the handle's rod so that it would raise the lever high enough for the latch to release. The spring breaking causes most of this problem but the cheap plastic parts in the mechanism only make the system more fragile.