Background: Our doors are made out of wood. They are extremely heavy and around 30+ years old.
Recently we notice our 3rd garage door stopping near the bottom of the track when closing and reverting back up.
The only way to keep the garage from reverting back up everytime, is to manually guide the garage door from by hand and apply a bit of pressure so that it doesn't trigger the door to stop and reverse.
We don't have any sensors on our doors. One thing I did also notice is that our spring is completely rusted out.
Couple of videos of what's happening when it's opening and closing.