开着弹出窗口关闭程序的时候会报错

[zypy333]

Exception in thread "JavaFX Application Thread" java.lang.IllegalStateException: The window has already been closed at com.sun.glass.ui.Window.checkNotClosed(Window.java:310) at com.sun.glass.ui.Window.getNativeWindow(Window.java:340) at com.sun.prism.PresentableState.update(PresentableState.java:350) at com.sun.javafx.tk.quantum.SceneState.update(SceneState.java:103) at com.sun.javafx.tk.quantum.GlassScene.updateSceneState(GlassScene.java:282) at com.sun.javafx.tk.quantum.WindowStage.lambda$setScene$1(WindowStage.java:268) at com.sun.javafx.tk.quantum.QuantumToolkit.runWithRenderLock(QuantumToolkit.java:428) at com.sun.javafx.tk.quantum.WindowStage.setScene(WindowStage.java:261) at javafx.stage.Window$9.invalidated(Window.java:896) at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:109) at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:144) at javafx.stage.Window.setShowing(Window.java:940) at javafx.stage.Window.hide(Window.java:965) at javafx.stage.PopupWindow.hide(PopupWindow.java:468) at org.controlsfx.control.PopOver.lambda$hide$5(PopOver.java:530) at javafx.animation.Animation.impl_finished(Animation.java:1132) at javafx.animation.AnimationAccessorImpl.finished(AnimationAccessorImpl.java:49) at com.sun.scenario.animation.shared.SingleLoopClipEnvelope.timePulse(SingleLoopClipEnvelope.java:103) at javafx.animation.Animation.impl_timePulse(Animation.java:1102) at javafx.animation.Animation$1.lambda$timePulse$0(Animation.java:186) at java.security.AccessController.doPrivileged(Native Method) at javafx.animation.Animation$1.timePulse(Animation.java:185) at com.sun.scenario.animation.AbstractMasterTimer.timePulseImpl(AbstractMasterTimer.java:344) at com.sun.scenario.animation.AbstractMasterTimer$MainLoop.run(AbstractMasterTimer.java:267) at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:557) at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:541) at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:534) at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:340) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:186) at java.lang.Thread.run(Thread.java:748)