"Extract information from LinkedIn groups into a Google Spreadsheet"

Hello, I am a newbie and need some help. I have a google spreadsheet. The task: to pull other information about the group (e.g. number of members) into the table from 5 LInkedIn group links.

What is the error, I am trying to pull groups through CSS Selector and it gives error [empty array].
Thanks


Groups (at least the one from the screenshot) are not available without being signed in. Are you doing any sort of authorization before attempting to get the group pages?