error message when not typing www

Hello ketanco,

You will need to add redirect rule in .htaccess file.Add the following lines of code in your .htaccess file.

RewriteEngine on
RewriteCond %{HTTP_HOST} ^roboticmagazine.com [NC]
RewriteRule ^(.*)$ https://www.roboticmagazine.com/$1 [L,R=301,NC]

This will redirect you non-www url to www url.

It seems like your site is trying to redirect to the www version, however there was already something outputted before.

Either you need to find what is being outputted before the redirect (e.g. disable all plugins, and see if it works)

Or you need to hook in even earlier and handle the redirect before the header is sent.