全文是：You are trying to open the league of legends game client in an invalid way.To successfully open the game client, click on the Play button and join a queue or create a custom game.
翻译是：你在尝试以一种无效的方式打开英雄联盟的客户端。要想成功打开游戏客户端，请点击“play”按钮，加入一个队列或创建一个自定义游戏。