Fatal error: Uncaught Error: Call to a member function get_user_profile_by_default_tree_structure() on null in /home/anpedioyu/public_html/anpdev/admin/referral_tree_structure.php:28 Stack trace: #0 {main} thrown in /home/anpedioyu/public_html/anpdev/admin/referral_tree_structure.php on line 28