Fatal error: Uncaught Error: Class 'Zend\View\Helper\AbstractHelper' not found in /var/www/html/ng-crm/yiiapp/vendor/cocur/slugify/src/Bridge/ZF2/SlugifyViewHelper.php:14 Stack trace: #0 {main} thrown in /var/www/html/ng-crm/yiiapp/vendor/cocur/slugify/src/Bridge/ZF2/SlugifyViewHelper.php on line 14