[sleuthkit-developers] NullPointerException at HashLookupSettingsPanel

[khoirunnisa A. <k....@ro...>]

Hello,
I just started developing module on Autopsy 4. I had followed steps in https://github.com/sleuthkit/autopsy/blob/develop/BUILDING.txt and successfully compile it on Ubuntu 12.04.5 using netbeans 8.0.2. But when running autopsy I get NullPointerException everytime new case was created. Here's the stacktraces :

SEVERE: Error creating case a
java.lang.NullPointerException
    at org.sleuthkit.autopsy.modules.hashdatabase.HashLookupSettingsPanel.addPropertyChangeListener(HashLookupSettingsPanel.java:109)
    at javax.swing.plaf.synth.SynthPanelUI.installListeners(SynthPanelUI.java:83)
    at javax.swing.plaf.synth.SynthPanelUI.installUI(SynthPanelUI.java:63)
    at javax.swing.JComponent.setUI(JComponent.java:666)
    at javax.swing.JPanel.setUI(JPanel.java:153)
    at javax.swing.JPanel.updateUI(JPanel.java:126)
    at javax.swing.JPanel.<init>(JPanel.java:86)
    at javax.swing.JPanel.<init>(JPanel.java:109)
    at javax.swing.JPanel.<init>(JPanel.java:117)
    at org.sleuthkit.autopsy.ingest.IngestModuleGlobalSettingsPanel.<init>(IngestModuleGlobalSettingsPanel.java:26)
    at org.sleuthkit.autopsy.modules.hashdatabase.HashLookupSettingsPanel.<init>(HashLookupSettingsPanel.java:67)
    at org.sleuthkit.autopsy.modules.hashdatabase.HashLookupModuleFactory.getGlobalSettingsPanel(HashLookupModuleFactory.java:103)
    at org.sleuthkit.autopsy.ingest.IngestModuleTemplate.getGlobalSettingsPanel(IngestModuleTemplate.java:69)
    at org.sleuthkit.autopsy.ingest.IngestJobSettingsPanel$IngestModuleModel.<init>(IngestJobSettingsPanel.java:362)
    at org.sleuthkit.autopsy.ingest.IngestJobSettingsPanel.<init>(IngestJobSettingsPanel.java:58)
    at org.sleuthkit.autopsy.casemodule.AddImageWizardIngestConfigPanel.<init>(AddImageWizardIngestConfigPanel.java:81)
    at org.sleuthkit.autopsy.casemodule.AddImageWizardIterator.getPanels(AddImageWizardIterator.java:55)
    at org.sleuthkit.autopsy.casemodule.AddImageWizardIterator.current(AddImageWizardIterator.java:104)
    at org.openide.WizardDescriptor.updateStateOpen(WizardDescriptor.java:844)
    at org.openide.WizardDescriptor.updateState(WizardDescriptor.java:822)
    at org.openide.WizardDescriptor._updateState(WizardDescriptor.java:800)
    at org.openide.WizardDescriptor.initialize(WizardDescriptor.java:475)
    at org.openide.NotifyDescriptor.getterCalled(NotifyDescriptor.java:302)
    at org.openide.DialogDescriptor.isModal(DialogDescriptor.java:322)
    at org.netbeans.core.windows.services.NbDialog.<init>(NbDialog.java:67)
    at org.netbeans.core.windows.services.DialogDisplayerImpl$1.run(DialogDisplayerImpl.java:158)
    at org.netbeans.core.windows.services.DialogDisplayerImpl$1.run(DialogDisplayerImpl.java:119)
    at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEventAccess(NbMutexEventProvider.java:138)
    at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.readAccess(NbMutexEventProvider.java:98)
    at org.netbeans.modules.openide.util.LazyMutexImplementation.readAccess(LazyMutexImplementation.java:94)
    at org.openide.util.Mutex.readAccess(Mutex.java:218)
    at org.netbeans.core.windows.services.DialogDisplayerImpl.createDialog(DialogDisplayerImpl.java:119)
    at org.netbeans.core.windows.services.DialogDisplayerImpl.createDialog(DialogDisplayerImpl.java:111)
    at org.sleuthkit.autopsy.casemodule.AddImageAction.actionPerformed(AddImageAction.java:130)
    at org.sleuthkit.autopsy.casemodule.NewCaseWizardAction$1.done(NewCaseWizardAction.java:113)
    at javax.swing.SwingWorker$5.run(SwingWorker.java:737)
    at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(SwingWorker.java:832)
    at sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112)
    at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(SwingWorker.java:842)
    at javax.swing.Timer.fireActionPerformed(Timer.java:313)
    at javax.swing.Timer$DoPostEvent.run(Timer.java:245)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
    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.awt.EventQueue.dispatchEvent(EventQueue.java:726)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
    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)

Does anyone could help me with this problem? Did I miss important steps or something?
 Thanks,Khoirunnisa Afifah