Login Error since the update Love's true test

I get on to update league and when i try to login this shows up:

Login Error Client version 6.2.16_01_27_16_56 is rejected by server

So i thought okay ima try again, it tries to log me in, says "Logging in" but i still get stuck with this login error... WTF is this so i'm and idon't really see other people having this problem or is it my laptop, i dunno. HALP MEH PLZ!!!!