Flashlight not working

I’m not sure why, but my flashlight simply will not work. I tried rebinding the key and all but it still doesn’t work. What do I do?

Have you recently joined any servers that downloaded a lot of files or have you downloaded a new addon of some sort?

I think I joined a TTT server, that’s all.

Clear your cache.
[Drive]:\Program Files\Steam\steamapps[Username]\garrysmod\garrysmod\cache