title: trying to convert xls to google spreadsheet using google app script and getting "Empty response" error
body: <p>I'm trying to convert a xls file to a google spreadsheet with the following code:</p>
  
  <pre><code>  var searchFor ="fullText contains 'theFile.xls' and '" + FolderId + "' in parents";  
    var files = DriveApp.searchFiles(searchFor); 
    var file = files.next().getBlob();  
    var convertedFileinfo = {
      title: 'theFile',
      parents:[{id: FolderId}]
    };
    Drive.Files.insert(convertedFileinfo, file, {
      convert: true,
      uploadType:'resumable'
    })
  </code></pre>
  
  <p>But i'm getting "Empty response" error on Drive.Files.insert line...</p>
  
  <p>What I'm doing wrong?</p>