Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /opt/lampp/htdocs/msjwagateway/vendor/laravel/framework/src/Illuminate/Http/Client/Promises/LazyPromise.php:9 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjwagateway/vendor/laravel/framework/src/Illuminate/Http/Client/Promises/LazyPromise.php on line 9