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nulljava.lang.RuntimeException: Failed to check session lock, aborting	at ahv.h(SourceFile:49)	at ahv.(SourceFile:35)	at ahr.(SourceFile:16)	at ahs.a(SourceFile:78)	at net.minecraft.client.Minecraft.a(SourceFile:1370)	at auo.e(SourceFile:157)	at aup.a(SourceFile:205)	at aun.a(SourceFile:175)	at auo.a(SourceFile:178)	at ban.b(SourceFile:774)	at net.minecraft.client.Minecraft.J(SourceFile:605)	at net.minecraft.client.Minecraft.run(SourceFile:534)	at java.lang.Thread.run(Unknown Source)