Misaki I have sent a fix to this crash.
Hopefully it helps!
EsotericSoftware/spine-runtimes2761

I've managed to get the crash log for this bug. I hope this helps.

ERROR: Can't retrieve singleton 'EditorInterface' outside of editor.
   at: (core/config/engine.cpp:298)
ERROR: Parameter "singleton_obj" is null.
   at: godot::EditorInterface::get_singleton (godot-cpp\gen\src\classes\editor_interface.cpp:68)

================================================================
CrashHandlerException: Program crashed with signal 11
Engine version: Godot Engine v4.3.stable.official (77dcf97d82cbfe4e4615475fa52ca03da645dbd8)
Dumping the backtrace. Please include this when reporting the bug to the project developer.
[1] error(-1): no debug info in PE/COFF executable
[2] error(-1): no debug info in PE/COFF executable
[3] error(-1): no debug info in PE/COFF executable
[4] error(-1): no debug info in PE/COFF executable
[5] error(-1): no debug info in PE/COFF executable
[6] error(-1): no debug info in PE/COFF executable
[7] error(-1): no debug info in PE/COFF executable
[8] error(-1): no debug info in PE/COFF executable
[9] error(-1): no debug info in PE/COFF executable
[10] error(-1): no debug info in PE/COFF executable
[11] error(-1): no debug info in PE/COFF executable
[12] error(-1): no debug info in PE/COFF executable
[13] error(-1): no debug info in PE/COFF executable
[14] error(-1): no debug info in PE/COFF executable
[15] error(-1): no debug info in PE/COFF executable
[16] error(-1): no debug info in PE/COFF executable
[17] error(-1): no debug info in PE/COFF executable
[18] error(-1): no debug info in PE/COFF executable
[19] error(-1): no debug info in PE/COFF executable
[20] error(-1): no debug info in PE/COFF executable
-- END OF BACKTRACE --
================================================================

The game will crash if you run the game that has a scene with a SpineSprite with a skeleton data and Debug>Visible Collision Shapes is enabled

Step by step recreation

1. Create a spine project with a single bone and an image
2. Export the project and load it in a Godot project with Spine GDExtension
3. Load the skeleton into a scene
4. Enable Debug>Visible Collision Shapes in the top left of Godot editor
5. Run the game, and the game will crash

Example Project :

• Spine :
  objectexample.zip

  22kB
• Godot :
  test-spine.zip

  3MB

Spine version 4.2.39
Godot version 4.3
Using spine-godot GDExtension for Godot 4.3

Thank you for fixing it! I really appreciate was really fast it to fix it, thanks again!

Thanks for the response! I have sent the mail of the reproduction project.

When I tried to use the physics constraint, the gravity is going up instead of down when imported to Godot.

Step by step recreation

1. In Spine, Create a bone with physics constraint
2. Set gravity to 100
3. Export and load it into Godot
4. When spawned or played in Godot editor, the bone goes up instead of down

Example project

• Spine :
  gravityspineproject.zip

  12kB
• Godot :
  gravitygodotproject.zip

  14kB

Spine version 4.2.20
Godot version 4.2.2