Ford fiesta Lx Mk6 2002 warning light?

My partner was changing a fuse in our car a few weeks ago. As the cigarette lighter was not working.
So he changed it and since then for some reason the warning light for the doors is always on. It means that a door is not shut however, they all are.

There's no fuse for this light so he couldnt have knocked it by mistake.
Does anyone know how to fix the problem as we can't even have our inside light set to ON.
Because it will always stay on and the indicater lights don't flash when the car is locked.

There's a bad door switch or other short circuit that needs tracing and repair.

Hi if only it was something simple which it could be if a ford dealer finds it. However this sounds more like something else and nothing to do with the fuse change. This is coincidental that both these things occurred at the same time.
there's more than one fault here so time to get it looked at the door maybe shut and maybe locked for a short period but the body module system is not reliable and it can be opened so easily without a key. Hi so given don only knows half the story get it to a ford dealer.