Fatal error: Uncaught Error: Call to undefined function add_action() in /home/wemmbca/public_html/wp-content/plugins/ultimate-blocks/src/blocks/image-slider/block.php:79 Stack trace: #0 {main} thrown in /home/wemmbca/public_html/wp-content/plugins/ultimate-blocks/src/blocks/image-slider/block.php on line 79