This error is shown when the estimation statistic of the agile board is set to Original Estimate/Original Time Estimate and the Time, Tracking fields are hidden on the Field Configuration.
To fix this find the Field Configuration for the project on the agile board and select 'Show':
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events