java.util.ConcurrentModificationException: This exception has no message.

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via GitHub by ThorbenLindhauer
, 5 months ago
This exception has no message.
java.util.ConcurrentModificationException:
at java.util.HashMap$HashIterator.nextNode(Unknown Source)
at net.minecraft.server.v1_9_R2.EntityTracker.updatePlayers(EntityTracker.java:176)
at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:874)
at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:403)
at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:723)
at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:622)

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