GiftedMotion fails to run

[rebeltaz]

So I tried to run GiftedMotion under Ubuntu 24.04 with 'java -jar giftedmotion-1.23.jar' and it failed to run with the following errors:

Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.net.URL.toString()" because "url" is null
	at java.desktop/sun.awt.SunToolkit.getImageFromHash(SunToolkit.java:700)
	at java.desktop/sun.awt.SunToolkit.getImage(SunToolkit.java:736)
	at java.desktop/javax.swing.ImageIcon.<init>(ImageIcon.java:213)
	at de.onyxbits.giftedmotion.IO.createIcon(Unknown Source)
	at de.onyxbits.giftedmotion.Core.<init>(Unknown Source)
	at de.onyxbits.giftedmotion.Core.main(Unknown Source)

Any ideas or help would be greatly appreciated. Thanks.