Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in /var/www/hrdesk.hawa.nl/public_html/composer/vendor/guzzlehttp/promises/src/Promise.php:9 Stack trace: #0 {main} thrown in /var/www/hrdesk.hawa.nl/public_html/composer/vendor/guzzlehttp/promises/src/Promise.php on line 9