Fatal error: Uncaught Error: Class "GuzzleHttp\Exception\TransferException" not found in C:\Apache24\htdocs\cms_upgrade\vendor\guzzlehttp\guzzle\src\Exception\RequestException.php:12 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\guzzlehttp\guzzle\src\Exception\RequestException.php on line 12