Why This Error Found?
As you are using FleetSSL as AutoSSL you found this issue.
(Solution)
How can you redirect your domain?
You need to add force to https code in the .htaccess of your domain.
Force HTTPS code:
RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
