Hi @servicioexpreso,
It seems you selected the non-www to www redirection when using the Bitnami HTTPS configuration tool. You can find these lines in the apache2/conf/bitnami/bitnami.conf file
# BEGIN: Enable non-www to www redirection
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteCond %{HTTP_HOST} !^(localhost|127.0.0.1)
RewriteCond %{REQUEST_URI} !^/\.well-known
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=permanent,L]
# END: Enable non-www to www redirection
and that's probably why you are obtaining the warning in Gtmetrix. I don't think that's a problem if you really want to use the www domain when accessing your application.
Please note that the new tool shows all the changes it's going to apply to the configuration and you must accept them before proceeding. If you want to modify any of those changes, the tool also allows you to do so.
As I mentioned, if you redirect the requests to www or https, gtmetrix will show that warning but that's not a problem if you really want to use https or www when accessing your site.
Our tool shows that it's going to force www and you accepted that.
If you don't want that redirection, just remove these lines from the bitnami.conf file and restart the server
# BEGIN: Enable non-www to www redirection
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteCond %{HTTP_HOST} !^(localhost|127.0.0.1)
RewriteCond %{REQUEST_URI} !^/\.well-known
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=permanent,L]
# END: Enable non-www to www redirection
it's included