Fatal error: Uncaught Error: Class 'Nextend\Framework\Data\Data' not found in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\Framework\Font\FontSettings.php:29 Stack trace: #0 C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\Framework\Font\FontSettings.php(23): Nextend\Framework\Font\FontSettings::load() #1 C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\Framework\Font\FontSettings.php(138): Nextend\Framework\Font\FontSettings->__construct() #2 {main} thrown in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\Framework\Font\FontSettings.php on line 29