Client becomes unresponsive after i get a game on ARAM

When i accept the popup for ARAM it doesnt go to the champ select instead it becomes unresponsive and is stuck there. It comes back after the champ select timer is done and loading screen pops up. It has happened all ARAM games ive queued for the past few days. Also After it becomes responsive a popup message saying an unknown error has occured comes up.