Getting an exception while using authorize() method

[nirajsp47]

Hi, I am getting a Refresh error exception when I try to execute the authorize() method.

  raise exceptions.RefreshError(
google.auth.exceptions.RefreshError: ('invalid_client: Unauthorized', {'error': 'invalid_client', 'error_description': 'Unauthorized'

I am passing the "client_secret.json" file as a parameter :

gc = pygsheets.authorize(client_secret="client_secret.json")

Surprisingly, when I use the same json file renamed as "credentials.json" in basic example provided by ghseets, I dont see any issue.

 if not creds or not creds.valid:
    if creds and creds.expired and creds.refresh_token:
      creds.refresh(Request())
    else:
      flow = InstalledAppFlow.from_client_secrets_file(
          "credentials.json", SCOPES
      ) 

My json file is in this format :

{"installed":
   {
   "client_id":"",
   "project_id":"",
   "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":"",
   "redirect_uris":
   }
}

Can you please help to understand what am I missing?
Is there a possibility that the json file format from google has changed?