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java.lang.NullPointerException at org.jivesoftware.smack.util.stringencoder.Base64.encode(Base64.java:64) at org.jivesoftware.smack.util.stringencoder.Base64.encode(Base64.java:60) at org.jivesoftware.smack.util.stringencoder.Base64.encodeToString(Base64.java:42) at org.jivesoftware.smack.sasl.SASLMechanism.authenticate(SASLMechanism.java:199) at org.jivesoftware.smack.sasl.SASLMechanism.authenticate(SASLMechanism.java:169) at org.jivesoftware.smack.SASLAuthentication.authenticate(SASLAuthentication.java:236) at org.jivesoftware.smack.tcp.XMPPTCPConnection.loginNonAnonymously(XMPPTCPConnection.java:365) at org.jivesoftware.smack.AbstractXMPPConnection.login(AbstractXMPPConnection.java:452) at org.jivesoftware.smack.AbstractXMPPConnection.login(AbstractXMPPConnection.java:427) at com.lets.dothis.myapplication.XMPP.login(XMPP.java:180) at com.lets.dothis.myapplication.XMPP$XMPPConnectionListener.connected(XMPP.java:206) at org.jivesoftware.smack.AbstractXMPPConnection.callConnectionConnectedListener(AbstractXMPPConnection.java:1152) at org.jivesoftware.smack.tcp.XMPPTCPConnection.connectInternal(XMPPTCPConnection.java:841) at org.jivesoftware.smack.AbstractXMPPConnection.connect(AbstractXMPPConnection.java:360) at com.lets.dothis.myapplication.XMPP$1.run(XMPP.java:150) at java.lang.Thread.run(Thread.java:856)