Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /home/steele15/public_html/voice/concrete/vendor/guzzlehttp/promises/src/Promise.php:14 Stack trace: #0 {main} thrown in /home/steele15/public_html/voice/concrete/vendor/guzzlehttp/promises/src/Promise.php on line 14