Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/guzzlehttp/promises/src/Promise.php:10 Stack trace: #0 {main} thrown in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/guzzlehttp/promises/src/Promise.php on line 10