Arm64 appimage export option

I would like an option to export AppImage files for arm64 systems
I have a linux sbc that cannot have gdevelop games installed because it is arm64
When i try to install one of the gdevelop appimage files it just says invalid encoding

wdym by arm64

the 64-bit version of the Linux operating system designed to run on ARM-based processors. I need an app image designed for the arm64 system. you need an x86-64 AppImage for an x86-64 system and an ARM AppImage for an ARM system

You can build your own package using Electron Builder. It has specific building pipelines for arm64 systems.

See here for more.