title: Python AWS Lambda deploy - Zappa unable to update lambda configuration
body: <p>I am facing an issue in pipeline deployment with Zappa - unable to update lambda configuration. It shows below error</p>
  <pre><code>Traceback (most recent call last):
    File &quot;/var/lang/lib/python3.7/site-packages/zappa/cli.py&quot;, line 3415, in handle
      sys.exit(cli.handle())
    File &quot;/var/lang/lib/python3.7/site-packages/zappa/cli.py&quot;, line 588, in handle
      self.dispatch_command(self.command, stage)
    File &quot;/var/lang/lib/python3.7/site-packages/zappa/cli.py&quot;, line 644, in dispatch_command
      self.vargs[&quot;docker_image_uri&quot;],
    File &quot;/var/lang/lib/python3.7/site-packages/zappa/cli.py&quot;, line 1174, in update
      wait=False,
    File &quot;/var/lang/lib/python3.7/site-packages/zappa/core.py&quot;, line 1408, in update_lambda_configuration
      if lambda_aws_config[&quot;PackageType&quot;] != &quot;Image&quot;:
  KeyError: 'PackageType'
  </code></pre>
  <p>It was working previously file but now when I run the pipeline its starts failing. I have not done any changes to requirements.txt it is the same as the previous successful pass.</p>
  <p>The version of Python is 3.7 and
  AWS is running in <code>us-east-1</code> region.</p>