Since I am a new Zen Cart user I would like to ask you for some help. I am trying to change my Front page, shipping policy,..etc. So I went in Tools -->Define Pages Editor--> and chose the pages I would like to Edit.
But then the problem appears. On every site which I choose I would like to Edit it says Error:I can not write to this file. Please set the right user permissions on: /var/www/vhosts/....etc

What kind of a permission?? I really don´t understand. Can someone please let me know what is this "Error" all about?

Thank You