title: When creating a PDF from a google sheet using a script editor, the image is not uploaded completely (just 80%)
body: <p>When I am creating a PDF with a script editor, I use the usual ''=IMAGE(H8,1)'' function. In cell H8 there is an image with URLs format. After creating the pdf, all the data is properly created (text, tables), unfortunately, the picture is not uploaded completely (just 80%).
  I have used the features utilities.sleep() but the same problem is still there.
  Is there any other way to fix this error or should I create a separate image upload function?</p>
  <p>I'm new here and I have just start with the script editor so please be understanding if I ask for something simple.</p>