Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/ucwlinge/public_html/wp-content/themes/prostyler-theme/library/cbt_framework/includes/custom_template.php:178 Stack trace: #0 {main} thrown in /home/ucwlinge/public_html/wp-content/themes/prostyler-theme/library/cbt_framework/includes/custom_template.php on line 178