In December 2018, PHP 5.6 and 7.0 reached End of Life (EOL) and stopped receiving security updates. This meant approximately 83% of WordPress sites were on unsupported versions of PHP at that time. One of the key objectives of the WordPress Site Health project was to encourage people to update to supported versions of PHP (Currently 7.2 or higher).
Last week, the ServeHappy API that drives the Site Health dashboard was updated to set the minimum acceptable PHP version to 7.2, while the WordPress downloads page recommends 7.3 or newer. Since PHP 7.2 reaches EOL in November 2020, we moved all of Outcome Labs sites and our customers who are on monthly care plans to PHP 7.3 when each of the hosting companies made it available. We have been running this site and some of our development sites on 7.4.
Have you checked the Site Health databoard on your WordPress site. We strongly recommend checking and and addressing issues like this. It will improve the security and performance of your site. If you need assistance, be sure to contact us.