Can't build xr_extx_overlay project

[Cherry030]

I build XR_overlay.sln following README.md.
Cmake build was successful and the OverlaySample.exe file was also created.
But not the xr_extx_overlay project. Visual studio MSB8066 error pops up saying that the custom build has ended.
Also, xr_generated_overlay.hpp and xr_generated_overlay.cpp, which should be included in this project, are not generated normally.
When I build the project, an error like the picture below.
how can i fix it?

[literally-anything]

Same issue, but im on Ubuntu Linux

[KarenGhavam-lunarG]

Folks.

This repository currently does not have any resources assigned to it. As stated in the README:

experimental extension to OpenXR is intended to prove the concept and uncover issues

We completed our experiments a long time ago and as such this isn't really a maintained project.