When pressing F everything disappears

Hello. I set up a flashlight system so when i press E it picks up the flashlight. But when i made the flashlight i originally wanted the interact button to be F but it bugged and still bugs when i press F. So basically when i press F all things (walls,actors) disappear but their collision still remains there. I dont know how to solve this issue. In my thirdperson blueprint i set up a thing so when i press F it should play a 2d sound but it does nothing. Like the F keyboard node doesnt even work.