Hey Daan,
Thanks for the quick response, I got your email and you were right – I changed AO’s font option to Leave-As-Is and my site isn’t having problems anymore. Thanks for being so on the ball.
For reference to anyone else, this is what Daan sent me:
“Hi Nathan,
I see you’re using Autoptimize. Is Autoptimize’s Google Fonts processing set to anything else than ‘Leave as is’? Because it should be on Leave as is…
After that, run the manual scan again and you should be back on track.
Kind regards,
Daan van den Bergh”
I’ve looked up those in the media library and indeed they do seem to link to a Header logo from a template I’m using but I’m not sure why the error is coming up when the image does exist (I’m not using it on the site however so I’m not sure why it’s being called up).