title: Firebase Admin SDK Python TransportError max retries exceeded
body: <p>Trying to Fetch and modify data from the real-time database. No code change was done, working fine till yesterday.
  Tried creating a new key, disabling service, updating packages. Nothing seems to work.</p>
  <p>The code is used in Python Firebase Admin SDK. It is used to get and modify data from the real-time database.
  I am using firebase_admin to access Firebase Realtime Database.</p>
  <pre><code>#Add Topics
  topics=root.child('Topics/')
  Category='Kabaddi'
  with open('/Users/user/Desktop/balancerproject/single_sample.json') as response:
      data = json.load(response)
      #topics.update(data)
      topics.child(Category+'/').push(data)
      send_fcm(data)
      #instaQuotes(data.get('Title'))
  </code></pre>
  <p>It is throwing error in topics.child(Category+'/').push(data)</p>
  <pre><code>
  TransportError: HTTPSConnectionPool(host='oauth2.googleapis.com', port=443): Max retries exceeded with url: /token (Caused by NewConnectionError('&lt;urllib3.connection.HTTPSConnection object at 0x10bb4b700&gt;: Failed to establish a new connection: [Errno 60] Operation timed out'))
  </code></pre>