Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in /opt/app-root/src/wp-content/plugins/xyz-wp-smap/vendor/guzzlehttp/guzzle/src/Pool.php:20 Stack trace: #0 {main} thrown in /opt/app-root/src/wp-content/plugins/xyz-wp-smap/vendor/guzzlehttp/guzzle/src/Pool.php on line 20