Error 500 and Error 400

I have tried to make forums but I made too many of the same. What's worst is that they don't let me get rid of them. The first some time they said error 400 but now it says ERROR 500: java.lang.NullPointerException.These are the forums:
forum 1
forum 2
forum 3

noahw8 years ago
Those aren't correct links to your forum topics. I see some more recent forum topics from you on your user page that you've got posted, so I'm guessing that whatever problem you were having has resolved itself. Let me know if you're still having trouble though.
Masterdude (author)  noahw8 years ago
I know but I want to get rid of the forums. I've had trouble with that.