Setting the Recovery Mode Email on Your Child Site
WordPress 5.2 introduced a fatal error recovery mode. A fatal error on a site would have normally resulted in a white screen of death, where the front-end of the site is white and would be the result of a fatal error conflict being caused by the active theme or one of the active plugins. The fatal error would have caused the sites wp-admin not be loadable. In WordPress 5.2, when a fatal error is detected, an email is sent to the admin email address listed on the site, but there is a constant that can be set in the child