Failed to save PHP options : Apache virtual host was not found

Hmmm, changing the php execution mode does indeed seem to work.

But if I got back to that page and simply select Save (without changing anything) I still get the

Failed to save PHP options : Apache virtual host was not found

So maybe this error message is an error itself? “failed to save” is because there’s nothing changed to save, and “Apache virtual host was not found” is the wrong reason there was no save?