Fatal error: Uncaught Error: Call to undefined function add_filter() in /var/www/noteswp.new/wp-content/plugins-backup/so-widgets-bundle/icons/icomoon/filter.php:498
Stack trace:
#0 {main}
thrown in /var/www/noteswp.new/wp-content/plugins-backup/so-widgets-bundle/icons/icomoon/filter.php on line 498