Fatal error: Uncaught Error: Call to undefined function plugin_dir_url() in /home/mysourcewise/public_html/wp-content/plugins/knight-lab-timelinejs/knightlab-timeline.php:19
Stack trace:
#0 {main}
thrown in /home/mysourcewise/public_html/wp-content/plugins/knight-lab-timelinejs/knightlab-timeline.php on line 19