Unable to connect to the game please check your network connection and reconnect to the game

I can't play league of legends because of this error. My network work pretty fine and i've dont had this problem until new update. I reinstall lol and same problem. I can't even play with bots and now i have 20 min leaver buster. I even stop the protection from my antivirus and when i enter the game it says the same . Help me please . Thanks !