Fatal error: Uncaught Error: Call to undefined function add_filter() in /var/www/noteswp.new/wp-content/plugins-backup/dokan-lite/includes/admin/class-settings.php:18 Stack trace: #0 /var/www/noteswp.new/wp-content/plugins-backup/dokan-lite/includes/admin/class-settings.php(493): Dokan_Settings->__construct() #1 {main} thrown in /var/www/noteswp.new/wp-content/plugins-backup/dokan-lite/includes/admin/class-settings.php on line 18