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Argument for @NotNull parameter 'children' of com/intellij/openapi/util/JDOMExternalizerUtil.addChildren must not be null
java.lang.IllegalArgumentException: Argument for @NotNull parameter 'children' of com/intellij/openapi/util/JDOMExternalizerUtil.addChildren must not be null	at com.intellij.openapi.util.JDOMExternalizerUtil.addChildren(JDOMExternalizerUtil.java)	at org.mule.lang.dw.launcher.configuration.WeaveConfiguration.writeExternal(WeaveConfiguration.java:92)	at com.intellij.execution.configurations.ModuleBasedConfiguration.clone(ModuleBasedConfiguration.java:98)	at com.intellij.execution.configurations.ModuleBasedConfiguration.clone(ModuleBasedConfiguration.java:41)	at com.intellij.execution.configurations.ConfigurationFactory.createConfiguration(ConfigurationFactory.java:50)	at com.intellij.execution.impl.RunManagerImpl.doCreateConfiguration(RunManagerImpl.java:139)	at com.intellij.execution.impl.RunManagerImpl.createConfiguration(RunManagerImpl.java:134)	at com.intellij.execution.impl.RunManagerImpl.createRunConfiguration(RunManagerImpl.java:1007)	at com.intellij.execution.actions.RunConfigurationProducer.cloneTemplateConfiguration(RunConfigurationProducer.java:221)	at com.intellij.execution.actions.RunConfigurationProducer.createConfigurationFromContext(RunConfigurationProducer.java:87)	at com.intellij.execution.junit.JavaRunConfigurationProducerBase.createConfigurationFromContext(JavaRunConfigurationProducerBase.java:64)	at com.intellij.execution.actions.RunConfigurationProducer.findOrCreateConfigurationFromContext(RunConfigurationProducer.java:178)	at com.intellij.execution.actions.PreferredProducerFind.getConfigurationsFromContext(PreferredProducerFind.java:107)	at com.intellij.execution.actions.ConfigurationContext.getConfigurationsFromContext(ConfigurationContext.java:297)	at com.intellij.execution.actions.BaseRunConfigurationAction.getConfigurationsFromContext(BaseRunConfigurationAction.java:93)	at com.intellij.execution.actions.BaseRunConfigurationAction.update(BaseRunConfigurationAction.java:198)	at com.intellij.openapi.actionSystem.ex.ActionUtil.performDumbAwareUpdate(ActionUtil.java:123)	at com.intellij.openapi.actionSystem.impl.Utils.doUpdate(Utils.java:188)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:139)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:164)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:164)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:164)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:164)	at com.intellij.openapi.actionSystem.impl.Utils.expandActionGroup(Utils.java:86)	at com.intellij.openapi.actionSystem.impl.Utils.fillMenu(Utils.java:280)	at com.intellij.openapi.actionSystem.impl.ActionPopupMenuImpl$MyMenu.show(ActionPopupMenuImpl.java:95)	at com.intellij.ide.ui.customization.CustomizationUtil$3.invokePopup(CustomizationUtil.java:291)	at com.intellij.ui.PopupHandler.mousePressed(PopupHandler.java:48)	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:280)	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)	at java.awt.Component.processMouseEvent(Component.java:6530)	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)	at com.intellij.ui.treeStructure.Tree.processMouseEvent(Tree.java:410)	at com.intellij.ide.dnd.aware.DnDAwareTree.processMouseEvent(DnDAwareTree.java:58)	at java.awt.Component.processEvent(Component.java:6298)	at java.awt.Container.processEvent(Container.java:2236)	at java.awt.Component.dispatchEventImpl(Component.java:4889)	at java.awt.Container.dispatchEventImpl(Container.java:2294)	at java.awt.Component.dispatchEvent(Component.java:4711)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4522)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)	at java.awt.Container.dispatchEventImpl(Container.java:2280)	at java.awt.Window.dispatchEventImpl(Window.java:2746)	at java.awt.Component.dispatchEvent(Component.java:4711)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)	at java.awt.EventQueue.access$500(EventQueue.java:97)	at java.awt.EventQueue$3.run(EventQueue.java:709)	at java.awt.EventQueue$3.run(EventQueue.java:703)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)	at java.awt.EventQueue$4.run(EventQueue.java:731)	at java.awt.EventQueue$4.run(EventQueue.java:729)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:822)	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:653)	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:384)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)