Tests work on local (both windows an linux) but fails on CI

This is a project I already asked about, but this is a different problem, so I decided to ask in a different thread.
I am using rely to execute my tests. It works fine when I execute them in my mac and also in the Linux environment that github workspaces setups for your project, which is probably debían or Ubuntu.
It’s important to remark that I don’t get any compilation or runtime error, it is just that the execution of the command returns an empty string instead of the expected output.
Here are the only tests that fail:

In both cases the result is the empty string (which is puzzling) instead of the expected string. It feels like something in the environment setup or something like that is missing.

The github workflow file is here: