Hi,
all good 🙂 The error only persisted while I had the old version of frontpage.php in my child theme directory.
I copied the new nirvana/frontpage.php to the child theme (and merged my original changes) so everything is looking great again.
While I’m here… Nirvana has to be one of the very best WordPress themes out there for tech-savvy and non-tech personnel alike. Amazing work!
Thanks, guys!
All the best from Scotland