원래 net.minecraft.server.integrated.IntegratedServer가 Lnet/minecraft/util/thread/ThreadExecutor;submitAsync(Ljava/lang/Runnable;)Ljava/util/concurrent/CompletableFuture;에서 Ljava/util/concurrent/CompletableFuture;supplyAsync(Ljava/util/function/Supplier;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;시에 Ljava/util/function/Supplier;get()Ljava/lang/Object;에서 java.lang.Error 던지면 예외처리 안 하고 그냥 ignore 하던가욘
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