System.ArgumentException: An item with the same key has already been added.

[ficnar]

This error occasionally occurs after launching a web application. The reason is probably due to the concurrent processing of two HTTP requests, each calling enqueue.

System.ArgumentException: An item with the same key has already been added. Key: default
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at Hangfire.Azure.ServiceBusQueue.ServiceBusManager.CreateQueueClients()
   at Hangfire.Azure.ServiceBusQueue.ServiceBusManager.GetSenderAsync(String queue)
   at Hangfire.Azure.ServiceBusQueue.ServiceBusQueueJobQueue.DoEnqueueAsync(List`1 jobs)