Fatal error: Uncaught Error: Call to undefined function add_action() in /home/clmepl5/public_html/web/app/plugins/shortcode-to-display-post-and-user-data/settings.php:13 Stack trace: #0 /home/clmepl5/public_html/web/app/plugins/shortcode-to-display-post-and-user-data/settings.php(90): WPSDD_Shortcode_Settings->init() #1 /home/clmepl5/public_html/web/app/plugins/shortcode-to-display-post-and-user-data/settings.php(98): WPSDD_Shortcode_Settings::get_instance() #2 {main} thrown in /home/clmepl5/public_html/web/app/plugins/shortcode-to-display-post-and-user-data/settings.php on line 13