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This exception has no message.
java.lang.NullPointerException: 	at org.jboss.tools.vscode.java.handlers.DocumentLifeCycleHandler.handleChanged(DocumentLifeCycleHandler.java:157)	at org.jboss.tools.vscode.java.handlers.DocumentLifeCycleHandler.access$2(DocumentLifeCycleHandler.java:154)	at org.jboss.tools.vscode.java.handlers.DocumentLifeCycleHandler$ChangeHandler$1.run(DocumentLifeCycleHandler.java:98)	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2240)	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2262)	at org.jboss.tools.vscode.java.handlers.DocumentLifeCycleHandler$ChangeHandler.handle(DocumentLifeCycleHandler.java:95)	at org.jboss.tools.vscode.java.handlers.DocumentLifeCycleHandler$ChangeHandler.handle(DocumentLifeCycleHandler.java:1)	at org.jboss.tools.langs.base.LSPServer.dispatchNotification(LSPServer.java:222)	at org.jboss.tools.langs.base.LSPServer.messageReceived(LSPServer.java:156)	at org.jboss.tools.langs.transport.AbstractConnection$DispatcherThread.run(AbstractConnection.java:32)