Feed not updating


I currently have multiple feeds on a site but only 1 is having trouble retrieving entries back although the script is the same for all sites just different q names, why would this be an issue when all settings are the same through all twitter sites. It looks to me as though the feed is having trouble and not being updated.

The feed only has 2 entries and even when adding a new entry it does not update, what could be causing this please?

Feed: https://search.twitter.com/search.json?q=Sharek_online
Twitter Site: https://twitter.com/#!/Sharek_online


My Twitter feed is not updating? What can I do?