Host name error while creating `UserAuthConfig`

[vedantthapa]

Hello, I'm trying to follow the docs for configuring ASM end-user authentication, however, encountering the error below while creating a UserAuthConfig (check the Status key):

Name:         user-auth-config
Namespace:    asm-user-auth
Labels:       <none>
Annotations:  internal.kpt.dev/upstream-identifier: security.anthos.io|UserAuthConfig|asm-user-auth|user-auth-config
API Version:  security.anthos.io/v1beta1
Kind:         UserAuthConfig
Metadata:
  Creation Timestamp:  2024-04-08T14:12:54Z
  Generation:          1
  Resource Version:    3282165
  UID:                 e9fd8aaf-40a0-4868-ad44-b5473562e06e
Spec:
  Authentication:
    Oidc:
      Certificate Authority Data:  
      Groups Claim:                
      Issuer URI:                  https://accounts.google.com
      Oauth Credentials Secret:
        Name:             oauth-secret
        Namespace:        asm-user-auth
      Proxy:              
      Redirect URI Host:  https://localhost:8443
      Redirect URI Path:  /_gcp_asm_authenticate
      Scopes:             
  Output JWT Audience:    test_audience
Status:
  User Auth Service:  One or more auth methods in generation 1 have failed to start: Unable to connect to 'https://kubernetes.default.svc/api/v1/namespaces/asm-user-auth/secrets/oauth-secret', encountered the following error: Couldn't resolve host name. Details: Could not resolve host: kubernetes.default.svc.
Events:               <none>

Moreover authservice also doesn't redirect to the OIDC login page. I'm assuming that a consequence of the above error?

Could someone please help me troubleshoot this?

Cluster version: v1.27.8-gke.1067004 (Autopilot)
ASM version: 1.17.8-asm.20 (Regular channel)