值不能为空。 参数名称：在 Azure 中使用 ServiceBus 触发器时的提供者

Question

When using a Service Bus Trigger in an Azure Function, an extension Bundle is required which is set in the file host.json

"extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[1.*, 3.0.0)"
}

Then a message appears :

Value cannot be null. Parameter name: provider

Answer 1

Removing Entity Path from Azure Service Bus Connection String did the trick for me.

It's placed at the end of the Connection String:

Endpoint=sb://%YourNamespace%.servicebus.windows.net/;SharedAccessKeyName=%SASpolicy_name%;SharedAccessKey=%SASkey%=;EntityPath=queue-name

Answer 2

If you do not have permission to that Subscription OR resource group you will see this error. Also make sure that HOST.JSON file is in sync with - Function app Environment configurations.