Game disconnected and when i logged back in the game is just gone. No option to get back into it.

A friend and I in ranked dynamic que were winning a game by a lot. Just got baron buff pushing into the enemy base to end and the game disconnected for both of us at the same time. Upon closing and reopening the client there is no indication for either of us that we were in a game. The game is just gone. This is very frustrating as I lost 35 minutes of gametime without any lp gain. Please give me answers if there is any. Thank you for your help. - MultipleSwogasms