Fatal error: Uncaught Error: Call to undefined function add_action() in /usr/home/ivssystem/domains/tanzanianvisa.ivs-system.com/public_html/dokosza/extensions/auto-post-thumbnail/auto-post-thumbnail.php:30
Stack trace:
#0 {main}
  thrown in /usr/home/ivssystem/domains/tanzanianvisa.ivs-system.com/public_html/dokosza/extensions/auto-post-thumbnail/auto-post-thumbnail.php on line 30