KEDA - Scale applications based on the count of blobs in a given Azure Blob Storage container

[yamuna-bhavani]

I have deployed an ngnix application and I am trying to scale the applicationn based on the Blob count present in Azure blob storage but I am facing an issue with KEDA where I am not able fetch the external metrics. Kindly Please help on this issue.

Logs of HPA :-

Steps to Replicate the issue :
Deploy the below yaml file for autoscalling.
apiVersion: keda.sh/v1alpha1
kind: TriggerAuthentication
metadata:
name: azure-queue-auth
spec:
podIdentity:
provider: azure

apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
name: azure-queue-scaledobject
namespace: default
spec:
scaleTargetRef:
name: nginx-deployment
triggers:

• type: azure-queue
  metadata:

  Required

  queueName: test

  Optional, required when pod identity is used

  accountName: Free Trial

  Optional: connection OR authenticationRef that defines connection

  connectionFromEnv: DefaultEndpointsProtocol=https;AccountName=csg10032001c690f4bf;AccountKey=azGQ+GLHuX7V6nZqh26oNmYgVI+kguNONwk7uXy5vTVj0foNVnvj5oGmRvG8BUgFy3mQjxk67/v4+cN+G0l1rg==;EndpointSuffix=core.windows.net # Default: AzureWebJobsStorage. Reference to a connection string in deployment

  or authenticationRef as defined below

  Optional

  queueLength: "5" # default 5
  authenticationRef:
  name: azure-queue-auth # authenticationR

command to deploy:
kubectl apply -f test.yaml

Error Message:
Warning FailedComputeMetricsReplicas 41m (x12 over 43m) horizontal-pod-autoscaler invalid metrics (1 invalid out of 1), first error is: failed to get azure-queue-test external metric: unable to get external metric default/azure-queue-test/&LabelSelector{MatchLabels:map[string]string{scaledObjectName: azure-queue-scaledobject,},MatchExpressions:[]LabelSelectorRequirement{},}: unable to fetch metrics from external metrics API: No matching metrics found for azure-queue-test
Warning FailedGetExternalMetric 28m (x60 over 43m) horizontal-pod-autoscaler unable to get external metric default/azure-queue-test/&LabelSelector{MatchLabels:map[string]string{scaledObjectName: azure-queue-scaledobject,},MatchExpressions:[]LabelSelectorRequirement{},}: unable to fetch metrics from external metrics API: No matching metrics found for azure-queue-test

Kindly please help on the issue. The YAML file contains the connection string but still not able to fetch the external metrics.