[14-Dec-2025 11:05:05 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function is_admin() in /home/icieg/1000class.com/wp-content/plugins/tutor-pro/addons/tutor-multi-instructors/views/metabox/instructors-metabox.php:10
Stack trace:
#0 {main}
  thrown in /home/icieg/1000class.com/wp-content/plugins/tutor-pro/addons/tutor-multi-instructors/views/metabox/instructors-metabox.php on line 10
[12-May-2026 05:38:27 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function is_admin() in /home/icieg/1000class.com/wp-content/plugins/tutor-pro/addons/tutor-multi-instructors/views/metabox/instructors-metabox.php:10
Stack trace:
#0 {main}
  thrown in /home/icieg/1000class.com/wp-content/plugins/tutor-pro/addons/tutor-multi-instructors/views/metabox/instructors-metabox.php on line 10
