java.lang.NullPointerException

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    • java.lang.NullPointerException: null values not allowed at org.jivesoftware.smack.util.collections.AbstractReferenceMap.put(AbstractReferenceMap.java:252) at org.jivesoftware.smackx.ChatStateManager.updateChatState(ChatStateManager.java:122) at org.jivesoftware.smackx.ChatStateManager.access$300(ChatStateManager.java:45) at org.jivesoftware.smackx.ChatStateManager$OutgoingMessageInterceptor.interceptPacket(ChatStateManager.java:144) at org.jivesoftware.smack.ChatManager.sendMessage(ChatManager.java:228) at org.jivesoftware.smack.Chat.sendMessage(Chat.java:113)
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