Using apache centos 7.9 & ispconfig 3 does anyone know where this is set? A 'cache-control' header contains directives with invalid values: 'stale-while-revalidate=2592000' Don't see in httpd.conf Believe the value is too high. Thanks
This header is usually set and controlled by the CMS you use in your website, not the web server. If it's not set by the CMS, it might be set via a .htaccess file in the web folder.
