title: error cannot import name 'cached_property' from 'werkzeug' when importing [ `from werkzeug.utils import cached_property` ]
body: <p>On importing "from flask_restplus import Api, Resource" api getting cannot import name 'cached_property' from 'werkzeug'</p>
  
  <pre><code>Python version : Python 3.7.2rc1
  pip freeze output 
  aniso8601==8.0.0
  attrs==19.3.0
  autopep8==1.5.1
  click==7.1.1
  Flask==1.1.2
  Flask-RESTful==0.3.8
  flask-restplus==0.13.0
  Flask-WTF==0.14.3
  importlib-metadata==1.6.0
  itsdangerous==1.1.0
  Jinja2==2.11.1
  jsonschema==3.2.0
  MarkupSafe==1.1.1
  pycodestyle==2.5.0
  pyrsistent==0.16.0
  pytz==2019.3
  six==1.14.0
  Werkzeug==1.0.1
  WTForms==2.2.1
  zipp==3.1.0
  On importing  from flask_restplus import Api, Resource  getting  below error : 
  cannot import name 'cached_property' from 'werkzeug'
  
  
  
  tried solution , importing [ `from werkzeug.utils import cached_property` ] which is not helping getting same error
  </code></pre>