Light bleed?

Hey, so out of nowhere my projector started having this weird light bleed on the right bottom corner. It's a Dangbei Atom, had it for around a year and used it pretty much daily without problems.

Put a sheet of paper on front of it so that it's more visible, but in actual use it's only visible in dark scenes.

Picture

It's there no matter how I adjust the keystone or any settings.

What could cause this? Is it something that can be fixed without sending it back?