Webapp Private Endpoint deployment is failing

[shankyps]

Team,
I am trying to deploy private endpoint for a webapp and it is failing with this error
{"code":"DeploymentFailed","message":"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/DeployOperations for usage details.","details":[{"code":"PrivateEndpointIpConfigurationMissingMemberNamesRequiredByFps","message":"Private Endpoint /subscriptions/XYZ/resourceGroups/shashankrg/providers/Microsoft.Network/privateEndpoints/abc-prd-pep contains static ipconfigurations: [PrivateIPAddress: 10.10.5.10, GroupId: , MemberName: sites] and its missing these membernames/groupids requested by Private Link service [GroupId: sites, MemberName: sites]. Private Endpoint needs to be reconfigured with missing memberNames."}]}

This is my code,I am leveraging module that I have for PEP

module privateendpoint 'private-endpoint1.0.1.bicep' = {
  scope: resourceGroup(resourceGroups.name)
  dependsOn: [
    appservice_site

    ]
  name: 'private-endpoint'
  params: {
    groupId: [
      'sites'
    ]
    name: appservice.privateEndpointName
    privateIPAddress:'10.10.5.10'
    location:resourceGroups.location
    serviceResourceId: appservice_site.outputs.resourceId
    targetSubnetResourceId: network.id
    privateDnsZoneGroups: appservice.privateDnsZoneGroups
    memberName:'sites'
  }
}

Based on this article member name should be mentioned as sites
https://docs.microsoft.com/en-us/azure/private-link/manage-private-endpoint?tabs=manage-private-link-powershell#determine-groupid-and-membername