Fatal error: Uncaught Error: Call to undefined function add_action() in /home2/onewayo1/public_html/wp-content/themes/Kate_Theme/lib/slm-sample-plugin.php:34 Stack trace: #0 {main} thrown in /home2/onewayo1/public_html/wp-content/themes/Kate_Theme/lib/slm-sample-plugin.php on line 34