An error occurred while running Galaxy on Fire 2

[gxk2000]

When running the game 《Galaxy on Fire2》 in the simulation, it is always in the loading state of the game, which is the relevant log:

sepetember@ubuntu:~/java$ java -jar freej2me.jar file:/home/sepetember/java/GalaxyOnFire2.jar 240 320
MIDlet-1: Galaxy on Fire 2,/data/interface/icon.png,Main.GOF2MIDlet
Create MIDlet
Create Canvas:240, 320
java.lang.NullPointerException
at ct.a(Unknown Source)
at ct.a(Unknown Source)
at ci.a(Unknown Source)
at ed.a(Unknown Source)
at Main.k.b(Unknown Source)
at Main.a.b(Unknown Source)
at bi.b(Unknown Source)
at Main.n.b(Unknown Source)
at Main.GOF2MIDlet.run(Unknown Source)
at java.base/java.lang.Thread.run(Thread.java:829)
wap_url: null
wap_menu: null
wap_prompt: null
java.lang.NullPointerException
at ed.a(Unknown Source)
at Main.k.a(Unknown Source)
at Main.a.a(Unknown Source)
at bi.b(Unknown Source)
at Main.n.b(Unknown Source)
at Main.GOF2MIDlet.run(Unknown Source)
at java.base/java.lang.Thread.run(Thread.java:829)
java.lang.NullPointerException
at ed.e(Unknown Source)
at Main.k.a(Unknown Source)
at Main.a.a(Unknown Source)
at bi.b(Unknown Source)
at Main.n.b(Unknown Source)
at Main.GOF2MIDlet.run(Unknown Source)
at java.base/java.lang.Thread.run(Thread.java:829)

The game files and screenshots are already under this repository, thanks for your help, I appreciate it!
https://github.com/gxk2000/Galaxy-on-Fire2

[AShiningRay]

Galaxy on Fire 2 uses the MascotCapsule V3 engine to render its 3D graphics. That one isn't implemented in any real capacity on FreeJ2ME as of yet.