```java.lang.IllegalStateException: Not on FX appl...
# tornadofx
a
Copy code
java.lang.IllegalStateException: Not on FX application thread; currentThread = tornadofx-thread-1
	at com.sun.javafx.tk.Toolkit.checkFxUserThread(Toolkit.java:279)
	at com.sun.javafx.tk.quantum.QuantumToolkit.checkFxUserThread(QuantumToolkit.java:423)