Fatal error: Uncaught Error: Class 'Aws\Multipart\AbstractUploadManager' not found in C:\gen\ms_core\DiscordApi\vendor\aws\aws-sdk-php\src\S3\MultipartCopy.php:10 Stack trace: #0 {main} thrown in C:\gen\ms_core\DiscordApi\vendor\aws\aws-sdk-php\src\S3\MultipartCopy.php on line 10