Fatal error: Uncaught Error: Interface 'GuzzleHttp\Promise\PromisorInterface' not found in /mnt/volume_lon1_01/backend/admin/vendor/guzzlehttp/promises/src/EachPromise.php:8
Stack trace:
#0 {main}
thrown in /mnt/volume_lon1_01/backend/admin/vendor/guzzlehttp/promises/src/EachPromise.php on line 8