java.lang.IllegalArgumentException: MasterFileObject[/Users/allenmontejo/NetBeansProjects/JsfJpaCrud/src/java/jpa@73ca8fa4:137a76ce,valid=true] is not inside MasterFileObject[/Users/allenmontejo/NetBeansProjects/JsfJpaCrud/src/java@7867a787:447f292a,valid=false] at org.netbeans.spi.project.support.ant.SourcesHelper$SourceRoot$Group.contains(SourcesHelper.java:198) at org.netbeans.spi.java.project.support.ui.TreeRootNode$GroupDataFilter.acceptFileObject(TreeRootNode.java:246) at org.openide.loaders.FolderChildren$1R.run(FolderChildren.java:164) at org.openide.util.Mutex$1Exec.run(Mutex.java:1239) at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1831) at org.openide.util.Mutex.postRequest(Mutex.java:1245) at org.openide.util.Mutex.postRequest(Mutex.java:1209) at org.openide.util.Mutex.postWriteRequest(Mutex.java:582) at org.openide.loaders.FolderChildren$1R.run(FolderChildren.java:146) Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalArgumentException: MasterFileObject[/Users/allenmontejo/NetBeansProjects/JsfJpaCrud/src/java/jpa@73ca8fa4:137a76ce,valid=true] is not inside MasterFileObject[/Users/allenmontejo/NetBeansProjects/JsfJpaCrud/src/java@7867a787:447f292a,valid=false] at org.openide.util.RequestProcessor.post(RequestProcessor.java:355) at org.openide.loaders.FolderChildren.refreshChildren(FolderChildren.java:195) at org.openide.loaders.FolderChildren.stateChanged(FolderChildren.java:135) at org.openide.util.WeakListenerImpl$Change.stateChanged(WeakListenerImpl.java:321) at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:130) at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:116) at org.netbeans.spi.java.project.support.ui.TreeRootNode$GroupDataFilter.propertyChange(TreeRootNode.java:233) at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:188) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276) at org.netbeans.spi.project.support.ant.SourcesHelper$SourceRoot$Group.propertyChange(SourcesHelper.java:245) at org.openide.util.WeakListenerImpl$PropertyChange.propertyChange(WeakListenerImpl.java:188) at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339) at org.netbeans.spi.project.support.ant.SequentialPropertyEvaluator.stateChanged(SequentialPropertyEvaluator.java:205) at org.openide.util.WeakListenerImpl$Change.stateChanged(WeakListenerImpl.java:321) at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:130) at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:116) at org.netbeans.spi.project.support.ant.ProjectProperties$PP$2.run(ProjectProperties.java:345) at org.netbeans.spi.project.support.ant.ProjectProperties$PP$2.run(ProjectProperties.java:343) at org.openide.util.Mutex.readAccess(Mutex.java:285) at org.netbeans.spi.project.support.ant.ProjectProperties$PP$3.run(ProjectProperties.java:359) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1356) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1894)