Fatal error: Uncaught Error: Class 'acf_field' not found in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Platform\WordPress\Integration\ACF\AcfFieldSmartSlider3.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\smart-slider-3\Nextend\SmartSlider3\Platform\WordPress\Integration\ACF\AcfFieldSmartSlider3.php on line 9