Alright guys, sometimes people have problems with running cron in Drupal. The most common issue is path problems. Since Drupal cron uses internal system paths, you can experience issues with paths to necessary files. For example your site is located in directory:
on your hosting server.
Let's say your domain is:
When server triggers cron.php file in your site, Drupal is trying to call some necessary files (like "include/bootstrap.inc") to do a cron job and it uses system paths like so: