Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/polirqqx/shortstoriesbyai.com/wp-content/plugins/gravityplus-gfutility/tools/record-sent-notifications.php:31
Stack trace:
#0 /home/polirqqx/shortstoriesbyai.com/wp-content/plugins/gravityplus-gfutility/tools/record-sent-notifications.php(198): GFPGFU_Record_Sent_Notifications->run()
#1 {main}
thrown in /home/polirqqx/shortstoriesbyai.com/wp-content/plugins/gravityplus-gfutility/tools/record-sent-notifications.php on line 31