Fatal error: Uncaught Error: Class 'Nextend\SmartSlider3\Platform\AbstractSmartSlider3Platform' not found in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Platform\WordPress\SmartSlider3PlatformWordPress.php:36 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Platform\WordPress\SmartSlider3PlatformWordPress.php on line 36