Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/polirqqx/shortstoriesbyai.com/wp-content/plugins/gravityplus-gfutility/class-toolbar-menu.php:18 Stack trace: #0 /home/polirqqx/shortstoriesbyai.com/wp-content/plugins/gravityplus-gfutility/class-toolbar-menu.php(113): GFPGFU_Toolbar_Menu->__construct() #1 {main} thrown in /home/polirqqx/shortstoriesbyai.com/wp-content/plugins/gravityplus-gfutility/class-toolbar-menu.php on line 18