title: SpreadsheetApp.insertImage server error
body: <p>Why the below code return 'server error' in GSuite Spreadsheet?</p>
  
  <pre><code>function test() {
    var ss = SpreadsheetApp.openById('1Wc6nKxxxxxxxxxxxxxxxxxx0Ld6QyaY');
    var sheet = ss.getSheetByName('2018.0801-0831');
    var img = DriveApp.getFileById('1qw2uy3cNxxxxxxxxxxxxxxxxxDZRES');
    var imgBlob = img.getBlob();
    sheet.insertImage(imgBlob, 9, 20);
  }
  </code></pre>
  
  <p>The Image is JPEG, 276KB.
  With an image its size is 173KB, this code is working.
  Is it possible to insert large imageBlobs?</p>