Fatal error: Uncaught Error: Class 'Nextend\Framework\Font\AbstractFontSource' not found in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\Framework\Font\Sources\GoogleFonts\GoogleFonts.php:35 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\Framework\Font\Sources\GoogleFonts\GoogleFonts.php on line 35