NPE while opening a window with Jide DocumentPane

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NPE while opening a window with Jide DocumentPane

Postby JananiPriya » Wed Feb 01, 2017 12:09 am

Hi,

I am getting the below error when opening a window with Jide tab components. It is not happening everytime but it does appear very often. Because of the NPE, the GUI seems to be messed up and could not able to perform any action in the window. Any help would be appreciated.

java.lang.NullPointerException
at com.jidesoft.document.DocumentPane.a(Unknown Source)
at com.jidesoft.document.TdiGroup$0.getBackgroundAt(Unknown Source)
at com.jidesoft.plaf.vsnet.VsnetJideTabbedPaneUI.getGradientColors(Unknown Source)
at com.jidesoft.plaf.vsnet.VsnetJideTabbedPaneUI.paintTabBackground(Unknown Source)
at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI.paintTab(Unknown Source)
at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI.paintTabArea(Unknown Source)
at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI$ScrollableTabPanel.paintComponent(Unknown Source)
at javax.swing.JComponent.paint(JComponent.java:1054)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JViewport.paint(JViewport.java:731)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:585)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5228)
at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:295)
at javax.swing.RepaintManager.paint(RepaintManager.java:1236)
at javax.swing.JComponent.paint(JComponent.java:1040)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:39)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:78)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:115)
at java.awt.Container.paint(Container.java:1967)
at java.awt.Window.paint(Window.java:3877)
at javax.swing.RepaintManager$3.run(RepaintManager.java:807)
at javax.swing.RepaintManager$3.run(RepaintManager.java:784)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:784)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:757)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:706)
at javax.swing.RepaintManager.access$1000(RepaintManager.java:62)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1651)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.awt.EventQueue$3.run(EventQueue.java:686)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Regards,
Janani
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Posts: 2
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Re: NPE while opening a window with Jide DocumentPane

Postby JIDE Support » Wed Feb 01, 2017 9:00 am

First of all, could you please make sure you are not updating the user interface from any non-event dispatching thread? Any intermittent errors in Swing could be a result of threading issue. Secondly, please run with debug jars that you can download from our website then run it again to reproduce the exception so that we can see the line number in the stack trace which will be useful.
JIDE Software Technical Support Team
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Re: NPE while opening a window with Jide DocumentPane

Postby suhasini » Mon Jul 13, 2020 3:14 am

Same issue,I often end with below exception after calling document pane load layout.Not sure of steps to reproduce but the UI seems to be black screen and gets painted where ever mouse moves.

STDERR: java.lang.NullPointerException
Jul 13, 2020 3:20:23 PM
STDERR: at com.jidesoft.document.DocumentPane.a(DocumentPane.java:1307)
Jul 13, 2020 3:20:23 PM
STDERR: at com.jidesoft.document.TdiGroup$0.getBackgroundAt(TdiGroup$0.java:38)
Jul 13, 2020 3:20:23 PM
STDERR: at com.jidesoft.plaf.vsnet.VsnetJideTabbedPaneUI.getGradientColors(VsnetJideTabbedPaneUI.java:1158)
Jul 13, 2020 3:20:23 PM
STDERR: at com.jidesoft.plaf.vsnet.VsnetJideTabbedPaneUI.paintTabBackground(VsnetJideTabbedPaneUI.java:216)
Jul 13, 2020 3:20:23 PM
STDERR: at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI.paintTab(BasicJideTabbedPaneUI.java:1011)
Jul 13, 2020 3:20:23 PM
STDERR: at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI.paintTabArea(BasicJideTabbedPaneUI.java:987)
Jul 13, 2020 3:20:23 PM
STDERR: at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI$ScrollableTabPanel.paintComponent(BasicJideTabbedPaneUI.java:8049)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JViewport.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintToOffscreen(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager.paint(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent._paintImmediately(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.JComponent.paintImmediately(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager$4.run(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager$4.run(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.security.AccessController.doPrivileged(Native Method)
Jul 13, 2020 3:20:23 PM
STDERR: at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager.access$1200(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.event.InvocationEvent.dispatch(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventQueue.access$500(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventQueue$3.run(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventQueue$3.run(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.security.AccessController.doPrivileged(Native Method)
Jul 13, 2020 3:20:23 PM
STDERR: at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventQueue.dispatchEvent(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
Jul 13, 2020 3:20:23 PM
STDERR: at java.awt.EventDispatchThread.run(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: Exception on AWT-EventQueue-0
Jul 13, 2020 3:20:24 PM
STDERR: java.lang.NullPointerException
Jul 13, 2020 3:20:24 PM
STDERR: at com.jidesoft.document.DocumentPane.a(DocumentPane.java:1307)
Jul 13, 2020 3:20:24 PM
STDERR: at com.jidesoft.document.TdiGroup$0.getBackgroundAt(TdiGroup$0.java:38)
Jul 13, 2020 3:20:24 PM
STDERR: at com.jidesoft.plaf.vsnet.VsnetJideTabbedPaneUI.getGradientColors(VsnetJideTabbedPaneUI.java:1158)
Jul 13, 2020 3:20:24 PM
STDERR: at com.jidesoft.plaf.vsnet.VsnetJideTabbedPaneUI.paintTabBackground(VsnetJideTabbedPaneUI.java:216)
Jul 13, 2020 3:20:24 PM
STDERR: at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI.paintTab(BasicJideTabbedPaneUI.java:1011)
Jul 13, 2020 3:20:24 PM
STDERR: at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI.paintTabArea(BasicJideTabbedPaneUI.java:987)
Jul 13, 2020 3:20:24 PM
STDERR: at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI$ScrollableTabPanel.paintComponent(BasicJideTabbedPaneUI.java:8049)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JViewport.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintChildren(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintToOffscreen(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager.paint(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent._paintImmediately(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.JComponent.paintImmediately(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager$4.run(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager$4.run(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.security.AccessController.doPrivileged(Native Method)
Jul 13, 2020 3:20:24 PM
STDERR: at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager.access$1200(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.event.InvocationEvent.dispatch(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventQueue.access$500(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventQueue$3.run(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventQueue$3.run(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.security.AccessController.doPrivileged(Native Method)
Jul 13, 2020 3:20:24 PM
STDERR: at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventQueue.dispatchEvent(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
Jul 13, 2020 3:20:24 PM
STDERR: at java.awt.EventDispatchThread.run(Unknown Source)
Jul 13, 2020 3:20:25 PM
STDERR: Exception on AWT-EventQueue-0
Jul 13, 2020 3:20:25 PM
suhasini
 
Posts: 62
Joined: Mon Dec 18, 2017 10:03 pm

Re: NPE while opening a window with Jide DocumentPane

Postby suhasini » Mon Jul 13, 2020 3:22 am

Also another NPE which checking the floating status of the document.The document is open and active and I am just checking the if it floating.

boolean floating = dp.isDocumentFloating(activeFrame);


STDERR: java.lang.NullPointerException
Jul 13, 2020 3:49:09 PM
STDERR: at com.jidesoft.document.DocumentPane.isDocumentFloating(DocumentPane.java:2997)
suhasini
 
Posts: 62
Joined: Mon Dec 18, 2017 10:03 pm

Re: NPE while opening a window with Jide DocumentPane

Postby JIDE Support » Wed Jul 15, 2020 7:18 am

Sorry for the late reply. For some reason, we didn't get email notification for the post.

We need a test case to reproduce it and fix the issue. Based on the line number of both exceptions, it seems like we call getDocument(name) to get the DocumentComponent and it is null. But we can't explain it from the information we have. A test case would be useful.
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