The issue of this repo - grid.png is not exported correctly when using the headless godot binary

[guysoft]

When using the godot editor and running/exporting the scene looks like this.
This is the expected result:

When using the gihub actions the grid.png is not imported and the scene looks like this.
This is the actual result.

How to reproduce in commandline:

Godot_v3.4-stable_linux_headless.64 --export Linux/X11 builds/LinuxX11/Energy-source-linux.x86_64 --verbose

(there is also a windows export that gives the same issue)

This also happens if you export this project using the godot headless script which this github action uses:

Binaries are available in the release page from the action:
https://github.com/guysoft/godot_import_action_reproduce/releases