Kicked out of game?

ok so this is the second time this has happened. im i a ranked game with a friend when suddenly we both get the "attempting to reconnect" message. we can still talk to eachother through discord, but the game is just frozen with the error message. ctrl+esc to the league client, it doesnt tell us that we're in game, it just shows us the home page. so we just left the game as nothing was happening and just queued up for another. can someone pls explain??