Cannot resolve symbol default_web_client_id in Firebase's Android Codelab

Question

I am trying to learn Firebase, so I went through the Android Codelab. The project they gave me however, had an error:

Cannot resolve symbol default_web_cl

Answer 1

I had the same problem or similar,

Make sure that in your google-services.json you have:

...    
"client": [
        ...
          "oauth_client": [
            ...
            {
              "client_id": "YOUR WEB CLIENT ID",
              "client_type": 3
            }     
...

For some reason the file downloaded from firebase console doesn't include it.

After adding the entry in the google-services.json file, everything started working as expected.

google-services-plugin documentation