# KREST2 nodes throw NullPointerException **URL:** \ **Category:** KNIME Analytics Platform\ **Created:** [July 7, 2016, 9:46pm UTC](https://forum.knime.com/t/krest2-nodes-throw-nullpointerexception/4654 "2016-07-07T21:46:24Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![hathawa](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/h/6a8cbe/32.png) [@hathawa](https://forum.knime.com/u/hathawa)\ **Post date:** [July 7, 2016, 9:46pm UTC](https://forum.knime.com/t/krest2-nodes-throw-nullpointerexception/4654/1 "2016-07-07T21:46:24Z")
All the Krest2 nodes throw a NullPointerException upon Configure (see below).  Any ideas? Krest1 nodes are OK.  I am using   REST Client    2.0.0.v201511201309    com.cenix.krest2.nodes.feature.feature.group    AABerger with     Eclipse SDK    4.5.0.I20150603-2000 ``` java.lang.NullPointerException at com.cenix.krest2.settings.authentication.AuthenticationSettingsGroup$2.forceRepaint(AuthenticationSettingsGroup.java:543) at com.cenix.krest2.settings.authentication.AuthenticationSettingsGroup$2.ancestorAdded(AuthenticationSettingsGroup.java:560) at javax.swing.AncestorNotifier.fireAncestorAdded(AncestorNotifier.java:86) at javax.swing.AncestorNotifier.propertyChange(AncestorNotifier.java:223) at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263) at java.awt.Component.firePropertyChange(Component.java:8430) at javax.swing.JComponent.addNotify(JComponent.java:4741) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at java.awt.Panel.addNotify(Panel.java:87) at java.awt.Container.addNotify(Container.java:2773) at java.awt.ScrollPane.addNotify(ScrollPane.java:561) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at javax.swing.JComponent.addNotify(JComponent.java:4740) at java.awt.Container.addNotify(Container.java:2773) at java.awt.Panel.addNotify(Panel.java:87) at java.awt.Container.addImpl(Container.java:1121) at java.awt.Container.add(Container.java:417) at org.knime.workbench.ui.wrapper.Panel2CompositeWrapper.(Panel2CompositeWrapper.java:105) at org.knime.workbench.ui.wrapper.WrappedNodeDialog.createDialogArea(WrappedNodeDialog.java:269) at org.eclipse.jface.dialogs.Dialog.createContents(Dialog.java:768) at org.eclipse.jface.window.Window.create(Window.java:430) at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1096) at org.knime.workbench.ui.wrapper.WrappedNodeDialog.create(WrappedNodeDialog.java:285) at org.eclipse.jface.window.Window.open(Window.java:792) at org.knime.workbench.ui.wrapper.WrappedNodeDialog.open(WrappedNodeDialog.java:164) at org.knime.workbench.editor2.editparts.NodeContainerEditPart.openNodeDialog(NodeContainerEditPart.java:817) at org.knime.workbench.editor2.actions.OpenDialogAction.runOnNodes(OpenDialogAction.java:129) at org.knime.workbench.editor2.actions.AbstractNodeAction.runInSWT(AbstractNodeAction.java:156) at org.knime.workbench.editor2.actions.AbstractNodeAction$1.run(AbstractNodeAction.java:142) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:186) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4761) at org.knime.workbench.editor2.actions.AbstractNodeAction.run(AbstractNodeAction.java:139) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) 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:497) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608) at org.eclipse.equinox.launcher.Main.run(Main.java:1515) ``` ---
**Author:** ![aborg](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/a/c89c15/32.png) [@aborg](https://forum.knime.com/u/aborg)\ **Post date:** [July 8, 2016, 1:52pm UTC](https://forum.knime.com/t/krest2-nodes-throw-nullpointerexception/4654/2 "2016-07-08T13:52:40Z")
(I would give a try to the new REST nodes in KNIME 3.2 from the Labs.) Sorry, I do not know why that happens.   ---
**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\ **Post date:** [June 23, 2023, 8:20pm UTC](https://forum.knime.com/t/krest2-nodes-throw-nullpointerexception/4654/3 "2023-06-23T20:20:52Z")