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