Fatal error: Uncaught Error: Call to undefined function add_action() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/so-widgets-bundle/compat/beaver-builder/beaver-builder.php:16 Stack trace: #0 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/so-widgets-bundle/compat/beaver-builder/beaver-builder.php(12): SiteOrigin_Widgets_Bundle_Beaver_Builder->__construct() #1 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/so-widgets-bundle/compat/beaver-builder/beaver-builder.php(88): SiteOrigin_Widgets_Bundle_Beaver_Builder::single() #2 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/so-widgets-bundle/compat/beaver-builder/beaver-builder.php on line 16