Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /home/amzgreatvaluesto/public_html/amz_sp/vendor/guzzlehttp/promises/src/Promise.php:10 Stack trace: #0 {main} thrown in /home/amzgreatvaluesto/public_html/amz_sp/vendor/guzzlehttp/promises/src/Promise.php on line 10