Fatal error: Uncaught Error: Class 'Aws\Multipart\AbstractUploader' not found in C:\gen\ms_core\DiscordApi\vendor\aws\aws-sdk-php\src\S3\MultipartUploader.php:15 Stack trace: #0 {main} thrown in C:\gen\ms_core\DiscordApi\vendor\aws\aws-sdk-php\src\S3\MultipartUploader.php on line 15