can't pvp

i made my test server and put some friends but when i try to battle with a gm i press battle and it says battles begins in5 -0 when it goes to 0 an try to hit nothing happens it says wrong target and my friend is in red color
do you know how to fix that
thanks

You really need to check all the GM commands....thats the whole hint I will give you about this, you will notice it is something really easy to "fix" ;)

lol i should put /attack off right?

Yup.

ty for help