League freezes?

So recently I discovered something about my LOL client. Sometimes when I am about to enter a game, basically any game, my league silently freezes and nothing happens. It just stops on the screen with the 10 champions that are about to fight. I don't know why this happens since I have a very reasonable PC with decent specs and an okay internet connection. I just wanted to put this on here, not really sure where it belongs but some help on how to make sure this doesn't happen again would be appreciated.
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