title: AWS CLI: "cannot import name UnrewindableBodyError"
body: <p>I got below error when running 'aws' on a ec2 instance. Any clues what this problem is about?</p>
  <pre class="lang-none prettyprint-override"><code>&gt;&gt;aws configure
  
  Traceback (most recent call last):
    File &quot;/bin/aws&quot;, line 19, in &lt;module&gt;
      import awscli.clidriver
    File &quot;/usr/lib/python2.7/site-packages/awscli/clidriver.py&quot;, line 17, in &lt;module&gt;
      import botocore.session
    File &quot;/usr/lib/python2.7/site-packages/botocore/session.py&quot;, line 27, in &lt;module&gt;
      import botocore.configloader
    File &quot;/usr/lib/python2.7/site-packages/botocore/configloader.py&quot;, line 19, in &lt;module&gt;
      from botocore.compat import six
    File &quot;/usr/lib/python2.7/site-packages/botocore/compat.py&quot;, line 26, in &lt;module&gt;
      from urllib3 import exceptions
    File &quot;/usr/lib/python2.7/site-packages/urllib3/__init__.py&quot;, line 10, in &lt;module&gt;
      from .connectionpool import (
    File &quot;/usr/lib/python2.7/site-packages/urllib3/connectionpool.py&quot;, line 31, in &lt;module&gt;
      from .connection import (
    File &quot;/usr/lib/python2.7/site-packages/urllib3/connection.py&quot;, line 45, in &lt;module&gt;
      from .util.ssl_ import (
    File &quot;/usr/lib/python2.7/site-packages/urllib3/util/__init__.py&quot;, line 4, in &lt;module&gt;
      from .request import make_headers
    File &quot;/usr/lib/python2.7/site-packages/urllib3/util/request.py&quot;, line 5, in &lt;module&gt;
      from ..exceptions import UnrewindableBodyError
  ImportError: cannot import name UnrewindableBodyError
  </code></pre>