Gradle Warnings: Could not find google-services.json while looking in

I got the following warnings. How can I avoid this warnings?

Could not find google-services.json while looking in [src/flavor1/debug, src/debug, src/flavor1] Could not find google-services.json while looking in [src/flavor1/release, src/release, src/flavor1] Could not find google-services.json while looking in [src/flavor2/debug, src/debug, src/flavor2] Could not find google-services.json while looking in [src/flavor2/release, src/release, src/flavor2]

I added two client_info at app/google-services.json

{
  "project_info": {
    "project_number": "000000000000",
    "project_id": "****-*****"
  },
  "client": [
    {
      "client_info": {
        "mobilesdk_app_id": ...,
        "android_client_info": {
          "package_name": "flavor1.package.name"
        }
      },
      ...
    },
    {
      "client_info": {
        "mobilesdk_app_id": ...,
        "android_client_info": {
          "package_name": "flavor2.package.name"
        }
      },
      ...
    }
  ],
  "configuration_version": "1"
}

As per my experience, this will occur when you are using any type of service related to firebase and you have not put the google-services.json the file which we needed to use the service,

The solution is you need to get the file from firebase console and you need to put inside of your app level folder if you are creating a single project in the console for all flavor and If you are creating different one then you need to create a number of files for a number of projects or flavors.