When you installed Webinoly v1.11.3 in a Focal Fossa server, I'm sure you received a warning message saying that: Partial Support for Ubuntu 20.04, Only for Testing purpose, don't use it in a production environment.
In social media, this message was also published.
The official documentation was just updated yesterday to add support for 20.04, before that Webinoly didn't have support for 20.04.
Seems like all of these warning messages were not enough!