Error in Azure function

Question

Error in Azure function

Deepak Mandala 1

Jul 28, 2021, 9:48 AM

Hi Team

Im Trying create a Azure function with http trigger using anonymous authentication from Microsoft visual studio code ,
while executing the code (ctrl +F5) i got error like below

Error: value cannot be null(Parameter 'provider')

connect ECONNREFUSED 127.0.0.1:9091

Pls help me how to resolve this

Thanks
Deepak

Michael Porter 6 Reputation points

May 17, 2022, 9:51 PM
I got this error when trying to debug a Python Event Hub listener in Visual Studio Code. This has to do with the version of the extension bundle as @MayankBargali-MSFT noted. I resolved by modifying host.json so it reads

"extensionBundle": { "id": "Microsoft.Azure.Functions.ExtensionBundle", "version": "[3.3.0, 4.0.0)" }

Also make sure when you deploy your function app and go to configurations. The value for "FUNCTIONS_EXTENSION_VERSION" should be "~4".

This drove me absolutely nuts!!!

1 answer

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Michael Porter 6 Reputation points

May 17, 2022, 9:51 PM

I got this error when trying to debug a Python Event Hub listener in Visual Studio Code. This has to do with the version of the extension bundle as @MayankBargali-MSFT noted. I resolved by modifying host.json so it reads

"extensionBundle": { "id": "Microsoft.Azure.Functions.ExtensionBundle", "version": "[3.3.0, 4.0.0)" }

Also make sure when you deploy your function app and go to configurations. The value for "FUNCTIONS_EXTENSION_VERSION" should be "~4".

This drove me absolutely nuts!!!

Answer 1

@Deepak Mandala Can you explicitly install extensions : https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-register and confirm if it helps you. Please share more details of what function runtime you are using, language, full log details.

I see below discussion on the similar issue and you can refer to the suggestion mentioned there and see if it helps you.
https://github.com/Azure/azure-functions-core-tools/issues/2364
https://github.com/Azure/azure-functions-core-tools/issues/2232
https://github.com/Azure/azure-functions-core-tools/issues/2364

If it didn't help I will suggest you to create the issue azure functions core tools team who can assist you further on this.

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Error in Azure function

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