i got an error message 412 precondition not definded

412 error message
When you see this error on your page ; one thing is definite to 99 % that you cannot do solve it yourself ; let ‘s try one more if you get this
error message again you have to contact immediately to your administrator or developer or whatsoever resource you have on this server to keep an eye
on.
Actually you would get this error message where there is some error about meta information about header file (i got an error message 412 precondition not definded).