Server Error - Ranked Lobby

I'm reporting specifically about an occurrence of disconnecting from the lobby while selecting a champion for my second ranked promotional series game. Upon it being my turn to select a champion, I could do anything. Momentarily, an error message appears clearly stating that an error as occurred, and that the game is attempting to contact the server? So after approximately a few minutes of waiting on the server to connect ( Precisely around 2 minutes), I decided to just restart the game (I practically spammed the character I wanted to play as, in hopes of re-logging to the usual screen where I have the option of selecting 'Reconnect'). To my surprise, I logged on, only to see the home page of the client. Meaning that I dodged...? This is the second time this has actually taken place, except the first time, I was able to reconnect into the game upon re-logging. Both of these issues have occurred consecutively on the same day. I won't be playing ranked anytime soon I guess, for the sake of others and myself, as I'm afraid I'll be losing more promo's in such a manner.