build failed when use FCM config

i try to config the app.json as expo doc :

 "android": {
    "googleServicesFile": "./google-services.json"

and i put the “google-services.json” file in the root of my project and i start to build like so :
expo build:android

and it start to build and after its just failed …i understand that something with the “googleServicesFile”: “./google-services.json” wrong because without it so it can build the project.
please help .