Fatal error: Uncaught Error: Interface "Amp\Pipeline\ConcurrentIterator" not found in /lamp/www/quantix/vendor/amphp/pipeline/src/Internal/ConcurrentClosureIterator.php:17 Stack trace: #0 {main} thrown in /lamp/www/quantix/vendor/amphp/pipeline/src/Internal/ConcurrentClosureIterator.php on line 17