java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at org.jivesoftware.wildfire.gateway.BaseTransport.handleIQRegister(BaseTransport.java:592)
at org.jivesoftware.wildfire.gateway.BaseTransport.processPacket(BaseTransport.java:394)
at org.jivesoftware.wildfire.gateway.BaseTransport.processPacket(BaseTransport.java:129)
at org.jivesoftware.wildfire.component.InternalComponentManager$RoutableComponent.process(InternalComponentManager.java:439)
at org.jivesoftware.wildfire.IQRouter.handle(IQRouter.java:218)
at org.jivesoftware.wildfire.IQRouter.route(IQRouter.java:96)
at org.jivesoftware.wildfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:67)
at org.jivesoftware.wildfire.net.SocketReader.processIQ(SocketReader.java:250)
at org.jivesoftware.wildfire.net.ClientSocketReader.processIQ(ClientSocketReader.java:51)
at org.jivesoftware.wildfire.net.SocketReader.process(SocketReader.java:216)
at org.jivesoftware.wildfire.net.BlockingReadingMode.readStream(BlockingReadingMode.java:156)
at org.jivesoftware.wildfire.net.BlockingReadingMode.run(BlockingReadingMode.java:62)
at org.jivesoftware.wildfire.net.SocketReader.run(SocketReader.java:123)
at java.lang.Thread.run(Unknown Source)

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