Grouper : Error : No items found

Grouper - Documentation

A scraper plugin was unable to find the portions of the page being scraped that you wanted converted into RSS items.

The markers or patterns that you supplied to tell CaRP how to find the items are incorrect: Check the page you are trying to scrape and whatever markers or patterns you have configured the Grouper plugin to look for and make sure they match.
The URL of the source data is incorrect: Check the URL you are passing to Grouper and make sure it points to the page you are trying to scrape.