Cannot play snapshot

[08:13:58] [Client thread/INFO]: Setting user: HalloweenSteve[08:13:58] [Client thread/INFO]: Setting user: HalloweenSteveException in thread "Client thread" java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) at java.lang.Thread.start(Unknown Source) at java.util.concurrent.CompletableFuture$ThreadPerTaskExecutor.execute(Unknown Source) at java.util.concurrent.CompletableFuture.asyncRunStage(Unknown Source) at java.util.concurrent.CompletableFuture.runAsync(Unknown Source) at com.mojang.datafixers.DataFixerBuilder.build(DataFixerBuilder.java:70) at yn.b(SourceFile:148) at yn.<clinit>(SourceFile:143) at afz$a.a(SourceFile:450) at afz.a(SourceFile:135) at afz.<clinit>(SourceFile:138) at fh.q(SourceFile:65) at fh.a(SourceFile:85) at java.util.LinkedHashMap$LinkedEntrySet.forEach(Unknown Source) at fh.<clinit>(SourceFile:84) at px.b(SourceFile:475) at clp.<init>(SourceFile:364) at net.minecraft.client.main.Main.main(SourceFile:145)