Is it a big bug or it's just for me

Does anyone had the same problem as mine? Today im logging up and it showed me black screen and error pops up "unable to connect to the server, please chech your network connection and attempts again" And when I press cancel its shows that Im in game and alwasy playing as jax for few minutes, when I restart the cient its shows that Im playing with jax again for a few minutes... It's kinda strange. I hope this will get fixed soon.