Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/vzrmenph/public_html/wp-content/plugins/icegram-rainmaker/lite/classes/feedback.php:40 Stack trace: #0 {main} thrown in /home/vzrmenph/public_html/wp-content/plugins/icegram-rainmaker/lite/classes/feedback.php on line 40