I have been running Farm based 2018-04-22b "Greebo" without issues.
This is virtual host based.
Today I did the 'wiki upgrade' to get to 2020-07-29 "Hogfather".
The Farmer account is running just fine.
Alas every animal is now dead. Each of them shows a blank white screen.
preload.php has the correct path for the system.
Help, please?