Unable to retrieve files: googleapi: Error 403: Request had insufficient authentication scopes.

[ghostwhowalks]

I'm a novice user, so its quite likely the problem is at my end -- so with that warning, here goes.

I have a simple drive search program with OAuth2, and it keeps failing with insufficient authentication scopes. I have pretty much all the authentication scopes selected, but it seems fail regardless...Is passing in the SCOPES array being done correctly? 

Any help is appreciated!

conf := &oauth2.Config{

ClientID: config.GoogleDriveClientID,

ClientSecret: config.GoogleDriveClientSecret,

RedirectURL: config.GoogleDriveOAuthRedirectUrl,

Scopes: []string{

// "https://www.googleapis.com/auth/drive",

"https://www.googleapis.com/auth/docs",

// "https://www.googleapis.com/auth/activity",

// "https://www.googleapis.com/auth/drive.appdata",

// "https://www.googleapis.com/auth/drive.apps",

// "https://www.googleapis.com/auth/drive.scripts",

// "https://www.googleapis.com/auth/drive.photos.readonly",

// "https://www.googleapis.com/auth/drive.apps.readonly",

// "https://www.googleapis.com/auth/drive.metadata.readonly",

// "https://www.googleapis.com/auth/drive.activity",

"https://www.googleapis.com/auth/presentations.readonly",

},

Endpoint: google.Endpoint,

}

tokenRes, err := utils.GetGoogleDriveOauthToken(code)

if err != nil {

fmt.Printf("error is being logged ")

log.Fatal(err)

}

tok := &oauth2.Token{AccessToken: tokenRes.Access_token }

// tok, err := conf.Exchange(context.Background(), "authorization-code")

client := conf.Client(context.Background(), tok)

fmt.Printf("client is %v ", client)

srv, err := drive.NewService(ctx, option.WithHTTPClient(client))

if err != nil {

log.Fatalf("Unable to retrieve Drive client: %v", err)

}

r, err := srv.Files.List().PageSize(10).

Fields("nextPageToken, files(id, name)").Do()

if err != nil {

log.Fatalf("Unable to retrieve files: %v", err)

}