Today I encountered a very weird issue my web portal made via Prestashop was opening with non www and showing a blank screen on www.sitename.com. Prestashop webportals avoids double content in search engines, so by default the access can be given to either www or non www by prestashop portal but the customer is not aware what to type just your site name or www.sitename so to avoid conflict its better to keep both the urls but the www url should 301 redirect to the non www portal lets see how to do this.
Steps to update this setting:
