What is a error please - Firebase config file error

[riadaska (Ria Das)]

Firebase gives Error

Since you are using firebase authentication Make sure that google-services.json is in assets. Make sure it doesn’t have a number, like google-services(1).json. The package name of your app, and the package name you provided to firebase to download “google-services.json” MUST be the same and finally check if firebase url is missing from json