Building PlayMode tests standalone fails with unspecified errors.

Hi,

I have created a couple of tests with the Test Framework that are supposed to run in Play Mode.

I can run the tests from the Test Runner window without issues. What I want to do now is running them from a standalone build. I tried triggering the build from the "Build All Tests" button in the Test Runner window.

The build process starts compiling scripts but then stops with a list of error messages that provide no further explanation. I have checked the Editor.log file but was unable to find any useful entries.

Does anyone know what might be causing this issue? Is there any file I could check?

I am using the Test Framework 1.1.29 and Unity 2020.3.25f1.

Any help would be appreciated.