title: Not supported proxy scheme None
body: <p>i have installed python 3.7 from anacoda. not able to install any new packages through pip or conda. environmental variables,proxy etc are configured. but still iam getting following error </p>
  
  <p>raise ProxySchemeUnknown(proxy.scheme)
  pip._vendor.urllib3.exceptions.ProxySchemeUnknown: Not supported proxy scheme None</p>
  
  <p>did any body resolved this error?</p>