I would like to use urlfetch to populate a spreadsheet with page data but the URL that I am trying to use is coming back with an error as an invalid argument. I think the problem is that I am using characters in the URL that are being misinterpreted (e.g. quotation marks and parentheses).
I have tried to encode the URL with the command below but I am assuming that I am double encoding some of the characters and that is causing a problem.
var encodedURL = encodeURIComponent(pageURL)
Try using
baseURL + encodeURIComponent(parameterString)
Where you include the parameters you're passing to the base URL you are querying as the value passed to the encodeURIComponent function. This post may be of use to you:
If you encode the entire URL, like it looks like you are doing above, you're encoding more than just the parameters, which I assume would be where your problem lies.