Check please if add to top .htaccess file (before WP Rocket rewrites) this 301 redirect work.
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^about\/$ https://scottcarneyphotography.com/about/ [R=301,L]
</IfModule>
Wordpress default add / to end of URL address, maybe request is /about/ not /about.
