The listener for function 'Functions.trigger' was unable to start? while running Azure function locally

Question

Error while during local run:

The listener for function 'Functions.trigger' was unable to start. Azure.Core: Retry failed after 6 tries. Retry settings can be adjusted in ClientOptions.Retry. (nodename nor servname provided, or not known (--------.blob.core.windows.net:443)) (nodename nor servname provided, or not known (--------.blob.core.windows.net:443)) (nodename nor servname provided, or not known (--------.blob.core.windows.net:443)) (nodename nor servname provided, or not known (--------.blob.core.windows.net:443)) (nodename nor servname provided, or not known (--------.blob.core.windows.net:443)) (nodename nor servname provided, or not known (--------.blob.core.windows.net:443)). Azure.Core: nodename nor servname provided, or not known (--------.blob.core.windows.net:443). System.Net.Http: nodename nor servname provided, or not known (--------.blob.core.windows.net:443). System.Net.Sockets: nodename nor servname provided, or not known. I have masked the "Account name",information

During the debug:

Exception has occurred: TypeError issubclass() arg 1 must be a class File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure/functions/_thirdparty/werkzeug/exceptions.py", line 695, in _find_exceptions is_http_exception = issubclass(obj, HTTPException) File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure/functions/_thirdparty/werkzeug/exceptions.py", line 707, in _find_exceptions() File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure/functions/_thirdparty/werkzeug/datastructures.py", line 2836, in from. import exceptions File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure/functions/_http.py", line 12, in from._thirdparty.werkzeug import datastructures as _wk_datastructures File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure/functions/init.py", line 8, in from._http import HttpRequest File "/Volumes/Project/ETFAnalyser/AzureProject/trigger/init.py", line 6, in import azure.functions as func File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure_functions_worker/loader.py", line 85, in load_function mod = importlib.import_module(fullmodname) File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure_functions_worker/utils/wrappers.py", line 40, in call return func(*args, **kwargs) File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure_functions_worker/dispatch er.py", line 305, in _handle__function_load_request func = loader.load_function( File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure_functions_worker/dispatcher.py", line 257, in _dispatch_grpc_request resp = await request_handler(request) File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/azure_functions_worker/main.py", line 50, in main return aio_compat.run(start_async( File "/usr/local/Cellar/azure-functions-core-tools@4/4.0.3971/workers/python/3.9/OSX/X64/worker.py", line 86, in main.main()

local.settings.host

"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "DefaultEndpointsProtocol=https;AccountName=--------;AccountKey=-------------;EndpointSuffix=core.windows.net",
"FUNCTIONS_WORKER_RUNTIME": "python"
}
}```


How to resolve the issue ?

Answer 1

I tried to reproduce the issue in my local environment, by following the below steps:

• Created a python function with Timer trigger as function using visual studio code.

• Using local storage we are able to run the function successfully.

• We have replaced the "AzureWebJobsStorage" value with connection string of azure storage account & came across multiple issue while running the function like.

I can fix those errors by using below steps:

Make sure you run your Storage Emulator with Admin privileges.

Killing the Function process & host process in the task manager

Posting killing the above function & host process when have re-ran the function Now I can able to run the azure function without issue: