Fatal error: Uncaught Error: Call to undefined function trailingslashit() in /home/.sites/19/site1802/web/www/wp-content/plugins/custom-facebook-feed-pro/query.php:7
Stack trace:
#0 {main}
  thrown in /home/.sites/19/site1802/web/www/wp-content/plugins/custom-facebook-feed-pro/query.php on line 7