Fatal error: Uncaught Error: Call to undefined function add_action() in /home/kacperg/public_html/kacpergr/wp-content/plugins/jetpack/modules/custom-post-types/testimonial.php:762 Stack trace: #0 {main} thrown in /home/kacperg/public_html/kacpergr/wp-content/plugins/jetpack/modules/custom-post-types/testimonial.php on line 762