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via Stack Overflow by Steve Lukis
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This exception has no message.
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via Spring JIRA by U. Kkm, 2 years ago
via Spring JIRA by U. Kkm, 2 years ago
java.lang.NullPointerException at java.util.Collections$UnmodifiableCollection.<init>(Collections.java:1026) at java.util.Collections$UnmodifiableSet.<init>(Collections.java:1128) at java.util.Collections.unmodifiableSet(Collections.java:1118) at org.jivesoftware.smack.ConnectionConfiguration.getEnabledSaslMechanisms(ConnectionConfiguration.java:476) at org.jivesoftware.smack.SASLAuthentication.selectMechanism(SASLAuthentication.java:359) at org.jivesoftware.smack.SASLAuthentication.authenticate(SASLAuthentication.java:191) at org.jivesoftware.smack.tcp.XMPPTCPConnection.loginInternal(XMPPTCPConnection.java:385) at org.jivesoftware.smack.AbstractXMPPConnection.login(AbstractXMPPConnection.java:491) at org.jivesoftware.smack.AbstractXMPPConnection.login(AbstractXMPPConnection.java:448) at Main.main(Main.java:23) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)