Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/clmepl5/public_html/web/app/plugins/wp-views/inc/ct-editor/section-usage.php:19 Stack trace: #0 /home/clmepl5/public_html/web/app/plugins/wp-views/inc/ct-editor/section-usage.php(526): Wpv_Content_Template_Editor_Section_Usage->__construct() #1 {main} thrown in /home/clmepl5/public_html/web/app/plugins/wp-views/inc/ct-editor/section-usage.php on line 19