Fatal error: Uncaught Error: Class 'Nextend\SmartSlider3\Renderable\AbstractRenderableOwner' not found in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Slider\Slide.php:28 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Slider\Slide.php on line 28