java.lang.IllegalArgumentException in Level 1

[yakout]

There is problem when starting level one this exception is thrown:

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: bound must be greater than origin
	at java.util.concurrent.ThreadLocalRandom.nextInt(ThreadLocalRandom.java:379)
	at models.shapes.util.ShapeFactory.getRandomShapeIdentifier(ShapeFactory.java:43)
	at models.shapes.util.ShapePool.getShape(ShapePool.java:21)
	at controllers.shape.ShapeGenerator$1$1.run(ShapeGenerator.java:59)
	at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)

Note: all other levels are working perfectly