Documentation in pipelines is empty

[PProfizi]

Before submitting the issue

• I have checked for Compatibility issues
• I have searched among the existing issues
• I am using a Python virtual environment

Description of the bug

The Documentation check passes but the documentation artifact is actually empty (easily verified with its small size of 48 kB).
The last known Documentation generation job to work was here on August 22.
Was rerun to check for unseen change in a dependency, it still passed.
Fails starting here.
Edit: Might actually go back as far as the addition of CopyButton, where the last check in the PR is ok, however when pushing to master it stops before creating the full doc.

Two problems here:

• the documentation check did not see something was wrong with the doc (artifact too small / step too short)
• no error was raised although something went obviously wrong

Steps To Reproduce

Run a GitHhub Actions workflow

Which Operating System are you using?

Windows

Which Python version are you using?

3.8

Installed packages

See PR

[PProfizi]

Fixed. Was due to the pyvista bug for Mesa OpenGL.