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java.lang.NullPointerException at oracle.dbtools.crest.swingui.diagram.graph.EdgeRenderer.getForeground(Unknown Source) at javax.swing.JComponent.setForeground(JComponent.java:2679) at oracle.dbtools.crest.swingui.diagram.graph.EdgeRenderer.installAttributes(Unknown Source) at oracle.dbtools.crest.swingui.diagram.graph.EdgeRenderer.setView(Unknown Source) at oracle.dbtools.crest.swingui.diagram.graph.EdgeRenderer.getRendererComponent(Unknown Source) at oracle.dbtools.crest.swingui.diagram.graph.AbstractCellView.getRendererComponent(Unknown Source) at oracle.dbtools.crest.swingui.diagram.ui.def.DefaultDiagramUI.paintCell(Unknown Source) at oracle.dbtools.crest.swingui.diagram.ui.def.DefaultDiagramUI.paint(Unknown Source) at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143) at javax.swing.JComponent.paintComponent(JComponent.java:760) at javax.swing.JComponent.paint(JComponent.java:1037) at javax.swing.JComponent.paintChildren(JComponent.java:870) at oracle.dbtools.crest.swingui.diagram.OverviewPanel.paintChildren(Unknown Source) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paint(JComponent.java:1046) at javax.swing.JLayeredPane.paint(JLayeredPane.java:567) at javax.swing.JComponent.paintChildren(JComponent.java:870) at javax.swing.JComponent.paintToOffscreen(JComponent.java:5139) at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1491) at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1422) at javax.swing.RepaintManager.paint(RepaintManager.java:1225) at javax.swing.JComponent.paint(JComponent.java:1023) at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21) at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60) at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97) at java.awt.Container.paint(Container.java:1778) at java.awt.Window.paint(Window.java:3390) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:797) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714) at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:694) at javax.swing.RepaintManager.access$700(RepaintManager.java:41) at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1636) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:666) at java.awt.EventQueue.access$400(EventQueue.java:81) at java.awt.EventQueue$2.run(EventQueue.java:627) at java.awt.EventQueue$2.run(EventQueue.java:625) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:636) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)