gcloud.exceptions.Forbidden: 403 Missing or insufficient permissions
<p>I am a new to Google Cloud Platform. I have setup a Google VM Instance. I am facing an authentication issue on Local Machine while running the command:</p>

<p><code>python manage.py makemigrations</code></p>

<p>Can you please suggest some tips/steps to resolve the same ? </p>

<p><strong>Error Trace</strong></p>

<pre><code>  File "/constants.py", line 18, in &lt;module&gt;
    table_data = datastore_fetch(project_id, entity_kind)
  File "/datastore_helper.py", line 23, in datastore_fetch
    results = list(query.fetch())
  File "/venv/local/lib/python2.7/site-packages/gcloud/datastore/query.py", line 463, in __iter__
    self.next_page()
  File "/venv/local/lib/python2.7/site-packages/gcloud/datastore/query.py", line 434, in next_page
    transaction_id=transaction and transaction.id,
  File "/venv/local/lib/python2.7/site-packages/gcloud/datastore/connection.py", line 286, in run_query
    _datastore_pb2.RunQueryResponse)
  File "/venv/local/lib/python2.7/site-packages/gcloud/datastore/connection.py", line 124, in _rpc
    data=request_pb.SerializeToString())
  File "/venv/local/lib/python2.7/site-packages/gcloud/datastore/connection.py", line 98, in _request
    raise make_exception(headers, error_status.message, use_json=False)
gcloud.exceptions.Forbidden: 403 Missing or insufficient permissions.
</code></pre>

<p>Other Info:</p>

<pre><code>gcloud auth list
Credentialed Accounts:
 - user_account@gmail.com ACTIVE
To set the active account, run:
    $ gcloud config set account `ACCOUNT`

gcloud config list
Your active configuration is: [default]

[core]
account = user_account@gmail.com
disable_usage_reporting = True
project = user_project
</code></pre>

<p><strong>Input:</strong> (Standalone Python Function)</p>

<pre><code>from gcloud import datastore
client = datastore.Client('user_project')

print(vars(client.connection.credentials))
</code></pre>

<p><strong>Output:</strong></p>

<pre><code>{'scopes': set([]), 'revoke_uri': 'https://accounts.google.com/o/oauth2/revoke', 'access_token': None, 'token_uri': 'https://www.googleapis.com/oauth2/v4/token', 'token_info_uri': None, 'token_response': None, 'invalid': False, 'refresh_token': u'1/t-V_pZicXXXXXXXXXXXXXXXXXXXXXXXXXXXXX', 'client_id': u'3XXXXXXXX9.apps.googleusercontent.com', 'id_token': None, 'client_secret': u'ZXXXXXXXXXXXXXXXXXXX2', 'token_expiry': None, 'store': None, 'user_agent': 'Python client library'}
</code></pre>

<p><strong>VM Details</strong></p>

<pre><code>Firewalls
Allow HTTP traffic 
Allow HTTPS traffic

Availability policies
Preemptibility  Off (recommended)

Automatic restart   
On (recommended)

On host maintenance 
Migrate VM instance (recommended)

Custom metadata
None

SSH Keys
Block project-wide SSH keys
None

Service account
service-account@user_project.iam.gserviceaccount.com

Cloud API access scopes
This instance has full API access to all Google Cloud services.
</code></pre>

<p>Thanks,</p>