mastery/summoner spell select error [Crash]

So I was trying to play a quick game of aram, and in the champ select after changing mastery page the mastery page select went dark and would not allow me to change again. After the select timer went out to zero the select froze. I waited for about a minute and nothing happened so I closed league and reopened. It took a while to open and then i joined but by then we had basically lost. I tried to play again and this time the same thing happened with the summoner spell select.

Any thoughts?