|OS type and version||Debian 11|
|Virtualmin version||7.3-1 Pro|
For your information: If
Website Options → Redirect all requests to SSL site
Logs and Reports → Connectivity Check
gives a false error.
Website request failed 500 write failed: Make sure your system’s web server is running, that port 80 is not blocked by a firewall, and that the domain has a valid index page.
I’ve tested forth and back multiple times and it is related to
Redirect all requests to SSL site