Alert Subscription Problem

Hi,

I have a problem with subscribing to Alerts in Alert Manager. I have created metrics and I have added an alert in monitor also.

But in the AlertManager Page, when I click on the category, I dont find any alert available for subcription. When I check the detail, it says "Invalid column name Everyone.."

Please let me know what I have to do to fix this issue.

Thanks in advance,

Ajitha