Fatal error: Uncaught Error: Class 'GuzzleHttp\Promise\RejectionException' not found in /mnt/volume_lon1_01/backend/admin/vendor/guzzlehttp/promises/src/AggregateException.php:7 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/guzzlehttp/promises/src/AggregateException.php on line 7