Fatal error: Uncaught Error: Class 'Google\Service\Resource' not found in C:\xampp7\htdocs\sigpkl\vendor\google\apiclient-services\src\AdExchangeBuyer\Resource\BillingInfo.php:31 Stack trace: #0 {main} thrown in C:\xampp7\htdocs\sigpkl\vendor\google\apiclient-services\src\AdExchangeBuyer\Resource\BillingInfo.php on line 31