Whole match crash.

Me and my friend were in a duo normal and we got into a game, around 4-5 minutes in we both get "Attempting to reconnect" after waiting a bit I restart my league however when I log back in its like the game never happened? I added a teammate from that game and ask him apparently the whole match broke. Not sure if this was a one time thing or what but I thought I should post about it just in case.