java.util.ConcurrentModificationException: This exception has no message.
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, 2 months agojava.util.ConcurrentModificationException:
at java.util.HashMap$HashIterator.nextNode(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at net.minecraft.entity.EntityTracker.func_72788_a(EntityTracker.java:269)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:648)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)