Homepage of https://newmansjoinery.co.uk/ has suddenly gone blank in the editor (back end) and front page editor just continually show the loading icon.
All other pages can be edited without a problem.
I have cleared Joomla and browser cache, tried different browsers, changed php to 7.3 (from 7.4)
Joomla version, 3.9.25
SP Page Builder Pro 3.7.9
<a href="https://ibb.co/GR6hWcs"><img src="https://i.ibb.co/6FMdHgv/sp.jpg" alt="sp" border="0"></a>