Fatal error: Uncaught Error: Class 'Nextend\Framework\Application\AbstractApplication' not found in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Application\ApplicationSmartSlider3.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Application\ApplicationSmartSlider3.php on line 14