What's wrong with my Facebook account?

Since last night, I’ve been unable to access my FB page. (Can’t get to Fluther’s FB page, either.) When I try to get on, I get this error message. At first, I just assumed Facebook was down, but I’ve had someone else check, and it’s fine for him. When he tried to go to my profile, though, he saw a very similar error message. Help?

I’m not using the timeline yet, if that helps.

I have to run out for a few hours, but I’ll check back later. Thanks in advance!