Fatal error: Uncaught Error: Class 'GuzzleHttp\Promise\RejectionException' not found in /var/www/typo3/vendor/guzzlehttp/promises/src/CancellationException.php:8 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/guzzlehttp/promises/src/CancellationException.php on line 8