Oh boy I confused you. I tried getting 8.0 and 8.1 to work in the meantime and they are broken on this domain too, but 8.1 is working and running on the server serving up domains. I copied the wrong place out of my domlog error file...
Sorry for the false alarm, do you want me to post the identical log strings that say the same thing only they say for php-fpm8.2? The forum got me with length restrictions and I did not pay attention to what I copied.