Fatal error: Uncaught Error: Call to undefined function Cornerstone\DynamicContent\Fonts\add_action() in /home/frassati/public_html/wp-content/plugins/cornerstone/includes/dynamiccontent/fonts.php:10 Stack trace: #0 {main} thrown in /home/frassati/public_html/wp-content/plugins/cornerstone/includes/dynamiccontent/fonts.php on line 10