Fatal error: Uncaught Error: Class "Google\Cloud\Core\Upload\AbstractUploader" not found in D:\programs\xampp\htdocs\antares-backend\vendor\google\cloud-core\src\Upload\ResumableUploader.php:33 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\antares-backend\vendor\google\cloud-core\src\Upload\ResumableUploader.php on line 33