Fatal error: Uncaught Error: Class "Nextend\Framework\Visual\AbstractBlockVisual" not found in /var/www/andovercg/staging/wp-content/plugins/smart-slider-3/Nextend/Framework/Style/Block/StyleManager/BlockStyleManager.php:14
Stack trace:
#0 {main}
thrown in /var/www/andovercg/staging/wp-content/plugins/smart-slider-3/Nextend/Framework/Style/Block/StyleManager/BlockStyleManager.php on line 14