credentials.json

{
  "web": {
    "client_id": "739771741359-gk2mkvimn063a2msd6hmkkksn17iamre.apps.googleusercontent.com",
    "project_id": "syncmaster-export",
    "auth_uri": "https://accounts.google.com/o/oauth2/auth",
    "token_uri": "https://oauth2.googleapis.com/token",
    "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
    "client_secret": "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",
    "redirect_uris": [
      "http://localhost:8502",
      "http://localhost:8502/",
      "http://127.0.0.1:8502",
      "http://127.0.0.1:8502/"
    ]
  }
}