
I’ve removed all plugins and still getting this error, When I removed Pro it stopped so wonder if you can look into this please. The site is https://robertastylelee.co.uk
I also activated the main pro theme and not the child to ensure it was not anything I’ve customised. This seems to be a bug in the core, with no plugins and a fresh theme I’m still seeing it.

Finally I removed all the custom sidebars as it appears to be related but still seeing the error. I also tried to load the site on another server to test. Same problem.