Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /home/simpledorrance/public_html/author-api.simple-dorrance.nstechs.net/author-backend/vendor/guzzlehttp/promises/src/RejectedPromise.php:15 Stack trace: #0 {main} thrown in /home/simpledorrance/public_html/author-api.simple-dorrance.nstechs.net/author-backend/vendor/guzzlehttp/promises/src/RejectedPromise.php on line 15