Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /opt/app-root/src/wp-content/plugins/xyz-wp-smap/vendor/guzzlehttp/promises/src/RejectedPromise.php:11 Stack trace: #0 {main} thrown in /opt/app-root/src/wp-content/plugins/xyz-wp-smap/vendor/guzzlehttp/promises/src/RejectedPromise.php on line 11