title: GET(url) returns error
body: <p>When I use below command </p>
  
  <pre><code>url = 'www.somesite.com'
  GET(url)
  </code></pre>
  
  <p>I get below error - I am not sure what it relates to. </p>
  
  <pre><code>Error in function (type, msg, asError = TRUE)  : 
    easy handled already used in multi handle
  </code></pre>