Fatal error: Uncaught Error: Class 'SCS_DB_Handler' not found in D:\wwwroot\knowledge\wp-content\plugins\smart-customer-service\smart-customer-service.php:62 Stack trace: #0 D:\wwwroot\knowledge\wp-content\plugins\smart-customer-service\smart-customer-service.php(49): Smart_Customer_Service->init() #1 D:\wwwroot\knowledge\wp-content\plugins\smart-customer-service\smart-customer-service.php(42): Smart_Customer_Service->__construct() #2 D:\wwwroot\knowledge\wp-content\plugins\smart-customer-service\smart-customer-service.php(127): Smart_Customer_Service::get_instance() #3 D:\wwwroot\knowledge\wp-content\plugins\smart-customer-service\smart-customer-service.php(131): smart_customer_service() #4 D:\wwwroot\knowledge\wp-settings.php(560): include_once('D:\\wwwroot\\know...') #5 D:\wwwroot\knowledge\wp-config.php(102): require_once('D:\\wwwroot\\know...') #6 D:\wwwroot\knowledge\wp-load.php(50): require_once('D:\\wwwroot\\know...') #7 D:\wwwroot\knowledge\wp-blog-header.php(13): require_once('D:\\wwwroot\\know...') #8 D:\wwwroo in D:\wwwroot\knowledge\wp-content\plugins\smart-customer-service\smart-customer-service.php on line 62