这是我尝试通过单击并拖动从视图到组件树创建新连接时得到的错误。我甚至在发布鼠标按钮之前就出现了这个错误，这看起来非常奇怪。
java.lang.NullPointerException
at com.intellij.appcode.designer.propertyTable.connections.ios.StoryboardConnectionInfo.addPresentingSegues(StoryboardConnectionInfo.java:108)
at com.intellij.appcode.designer.propertyTable.connections.ios.StoryboardConnectionInfo.addConnections(StoryboardConnectionInfo.java:56)
at com.intellij.appcode.designer.propertyTable.connections.ios.IOSXibConnectionManager.getConnectionProperties(IOSXibConnectionManager.java:103)
at com.intellij.appcode.designer.propertyTable.connections.ios.StoryboardConnectionManager.getConnectionProperties(StoryboardConnectionManager.java:47)
at com.intellij.appcode.designer.model.storyboard.AbstractV3ModelParser.getConnectionProperties(AbstractV3ModelParser.java:55)
at com.intellij.appcode.designer.model.RadXmlComponent.getConnectionProperties(RadXmlComponent.java:270)
at com.intellij.appcode.designer.propertyTable.connections.ConnectionTool$3.resultFilter(ConnectionTool.java:244)
at com.intellij.designer.componentTree.TreeEditableArea.findTarget(TreeEditableArea.java:210)
at com.intellij.appcode.designer.propertyTable.connections.ConnectionTool.handleDragInProgress(ConnectionTool.java:232)
at com.intellij.designer.designSurface.tools.InputTool.mouseDrag(InputTool.java:302)
at com.intellij.designer.designSurface.tools.ToolProvider.processMouseEvent(ToolProvider.java:93)
at com.intellij.designer.designSurface.ComponentGlassLayer.mouseDragged(ComponentGlassLayer.java:101)
at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:303)
at java.awt.Component.processMouseMotionEvent(Component.java:6462)
at javax.swing.JComponent.superProcessMouseMotionEvent(JComponent.java:3299)
at javax.swing.Autoscroller.actionPerformed(Autoscroller.java:159)
at javax.swing.Timer.fireActionPerformed(Timer.java:291)
at javax.swing.Timer$DoPostEvent.run(Timer.java:221)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:715)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:685)
at com.intellij.ide.IdeEventQueue.e(IdeEventQueue.java:748)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:577)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:384)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)