In my Apps Script add-on, I need to use an external library JSSoup for managing some HTML text. I followed this answer to figure out how to add/import an external library in Apps Script. Then I added eval(UrlFetchApp.fetch('https://github.com/chishui/JSSoup/blob/master/lib/jssoup.js').getContentText();
in my script but it is throwing this error:
SyntaxError: Unexpected token '<'
No more logging available for this error. How can I resolve this error?