I checked several of my servers after running updates to PHP and have experienced the same issue this time.
However, if it may help troubleshooting why this occurs in the Virtualmin interface (and not other control panels we use here), when this happened to me in PHP-FPM configuration error on all server's sites I ran some tests on a number of websites on several boxes.
I found that from within the websites affected, the proper version of PHP was actually running despite that error indication AND despite the indication that the box’s “default” PHP was in place.
Hope that’s helpful someplace along the line.