@<1523701087100473344:profile|SuccessfulKoala55> my colleague submitted a pipeline whose component was referencing a non-existent queue. The queue doesn't actually exist, that's the issue. The "default" queue that handles the controller task just started to output error messages saying that this component can't be scheduled due to missing queue. We just want a way to fail early if a queue doesn't exist, instead of a pipeline running indefinitely without actually failing.