Retrieving Data from Server

When entering lobby on Legend of the Poro King, it randomly says 'Retrieving Data from Server' and never loads the lobby. The game kicks everyone out because I 'failed to pick a champion', and now I have to wait to try and play another game because of something I couldn't control. Happens randomly and has only started being a problem since the recent update.

Other computers in the house in the same game connect to the lobby just fine. It's not my network.