Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in /home/andinaes/public_html/aulavirtual/lib/aws-sdk/src/CommandPool.php:14 Stack trace: #0 {main} thrown in /home/andinaes/public_html/aulavirtual/lib/aws-sdk/src/CommandPool.php on line 14