ERROR: Cannot invoke "javafx.scene.Node.getScene()" because "n" is null

[XMRZombie]

This happens when a UI component is not properly initialized or added to the scene graph before layout operations occur.

[JavaFX Application Thread] ERROR haveno.common.setup.CommonSetup: Uncaught Exception from thread JavaFX Application Thread, error=Cannot invoke "javafx.scene.Node.getScene()" because "n" is null
 java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "n" is null
	at javafx.graphics/javafx.scene.layout.Region.getSnapScaleX(Region.java:264)
	at javafx.graphics/javafx.scene.layout.Region.layoutInArea(Region.java:2534)
	at javafx.controls/javafx.scene.control.SkinBase.layoutInArea(SkinBase.java:965)
	at javafx.controls/javafx.scene.control.SkinBase.layoutInArea(SkinBase.java:850)
	at javafx.controls/javafx.scene.control.skin.TableViewSkinBase.layoutChildren(TableViewSkinBase.java:458)
	at javafx.controls/javafx.scene.control.Control.layoutChildren(Control.java:612)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1208)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Parent.layout(Parent.java:1215)
	at javafx.graphics/javafx.scene.Scene.doLayoutPass(Scene.java:594)
	at javafx.graphics/javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2600)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:401)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:400)
	at javafx.graphics/com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:430)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:592)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:572)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:565)
	at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:352)
	at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
	at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
	at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$10(GtkApplication.java:263)
	at java.base/java.lang.Thread.run(Thread.java:1583)

[woodser]

This error is often the result of building and running the application, and then rebuilding while the application is still running, so the current runtime becomes outdated, in case you were doing development work which could have caused it?

Otherwise the error is rare and random and I haven't been able to track down its root cause, without a useful link in the stack trace.

[XMRZombie]

I built haveno from source and always making sure to shutdown the client before doing $ make clean

[woodser]

I think we're stuck without a way to reproduce it.