2019-07-10 09:45:22.082 [in_7-muc]         StanzaProcessor.sendException()         WARNING:  Problem during generate error response
tigase.xmpp.PacketErrorTypeException: The packet has already 'error' type: from=s2s@ip-10-0-46-218.us-west-2.compute.internal, to=null, DATA=[iq xmlns="jabber:client" from="im@jabber.de/Conversations.yJq_" type="error" id="0F0AB2E2-F6C8-4301-8B64-E7FDB1E5BFC0" to="tigase@muc.tigase.org/kobit"][error type="cancel"][recipient-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/][/error][/iq], SIZE=255, XMLNS=jabber:client, PRIORITY=NORMAL, PERMISSION=REMOTE, TYPE=error
	at tigase.xmpp.Authorization.getResponseMessage(Authorization.java:477)
	at tigase.xmpp.XMPPProcessorException.makeElement(XMPPProcessorException.java:122)
	at tigase.component.modules.StanzaProcessor.sendException(StanzaProcessor.java:136)
	at tigase.component.modules.StanzaProcessor.processPacket(StanzaProcessor.java:109)
	at tigase.component.AbstractKernelBasedComponent.processPacket(AbstractKernelBasedComponent.java:81)
	at tigase.muc.MUCComponent.processPacket(MUCComponent.java:121)
	at tigase.muc.cluster.MUCComponentClustered.processPacket(SourceFile:87)
	at tigase.server.AbstractMessageReceiver$QueueListener.run(AbstractMessageReceiver.java:1319)