Did not find any initialized language workers

SoonJoo@Genting 241

Hi, I have deployed a blog trigger functions in Azure for more than 5 months. Throughout the course I have not encounter any issues until these 2 days.

I am having this error in the function apps while invoking the functions: "Did not find any initialized language workers"

I want to know what is the course of the problem and how should I solve this problem as currently my functions has stop functioning after few errors pop up.

I am running on python-3.10 with webapps as the webservices.

The following is the example of the error messages:

11/5/2024, 9:28:47 AM Information Executing 'Functions.mqtt_blob_trigger' (Reason='New blob detected(LogsAndContainerScan): mqtt/agtechiothub/00/2024/10/30/14/37.json', Id=2123e18b-1cd3-4def-81df-2472251e8553) 11/5/2024, 9:28:47 AM Information Trigger Details: MessageId: 84c54567-efae-4d43-ab4f-bcd126df4ef5, DequeueCount: 2, InsertedOn: 2024-11-04T12:41:24.000+00:00, BlobCreated: 2024-10-30T14:39:09.000+00:00, BlobLastModified: 2024-10-30T14:39:09.000+00:00 11/5/2024, 9:28:48 AM Error Did not find any initialized language workers 11/5/2024, 9:28:48 AM Error Executed 'Functions.mqtt_blob_trigger' (Failed, Id=2123e18b-1cd3-4def-81df-2472251e8553, Duration=178ms) 11/5/2024, 9:28:48 AM Error Did not find any initialized language workers

Please assist. Thank you!

JananiRamesh-MSFT 28,081 Reputation points

2024-11-05T04:32:05.5566667+00:00

@SoonJoo@Genting Thank you for posting this in Microsoft Q&A. I am looking into this issue and will get back to you post my research.
JananiRamesh-MSFT 28,081 Reputation points

2024-11-05T06:45:58.9633333+00:00

@SoonJoo@Genting Thanks for reaching out. I understand that you are encountering the error 'Did not find any initialized language workers' while executing azure function. You can get this error message for various reasons.

The exception above says that when the function invocation took place, there was not a worker available for it. This could point to a worker crash from a previous function invocation or worker initialization issue. If you are injecting any dependencies, please check if they are done properly and correct versions of SDK are being used.

Could you please confirm if this works locally? If this error is seen locally while executing from your local dev machine, then it looks like language worker could have same issue. Try re-installing the function core tool with most recent issue and see if it helps.

Verify if the FUNCTIONS_WORKER_RUNTIME environment variable is set correctly in your local settings in application.

If the issue is seen after deploying to Azure, then ensure that the Functions App Settings have the below settings:

FUNCTIONS_WORKER_RUNTIME

The language worker runtime to load in the function app. This corresponds to the language being used in your application (for example, Python).

WEBSITE_RUN_FROM_PACKAGE

Try adding the App setting "WEBSITE_RUN_FROM_PACKAGE" to 1

https://learn.microsoft.com/en-us/azure/azure-functions/functions-app-settings#functions_worker_runtime

Changes to function app settings require your function app to be restarted.

Sharing similar discussions which might help you to resolve the issue: https://stackoverflow.com/questions/56832315/azure-function-did-not-find-any-initialized-language-workers

https://learn.microsoft.com/en-us/answers/questions/1412997/getting-the-error-did-not-find-any-initialized-lan

Hope this helps. If you still see the same issue, please do get back to me. I would be happy to help.
JananiRamesh-MSFT 28,081 Reputation points

2024-11-06T05:39:56.64+00:00

@SoonJoo@Genting Just checking to see if you have chance to see previous response and helped. Please let us know if you have further query or issue remains.
JananiRamesh-MSFT 28,081 Reputation points

2024-11-07T05:57:13.14+00:00

@SoonJoo@Genting We haven't heard back from you. Please reply if you have any questions in this matter and we will gladly continue the discussion.

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Did not find any initialized language workers

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