Why is the work scope on the burnup chart displaying more Story Points than the sprint?

Regan Welcome_vvclqi

For some reason when I start a new Sprint, the tally of Story Points on the Burnup chart doesn't match and is more than the work scope allocation in the Sprint, as seen in the Backlog View, Burndown Chart & the Sprint Report... There are 25 Story Points allocated, however, the Burnup displays 30! 

Any reason why the work scope on the burnup chart displays more Story Points than the sprint? 

Regan Welcome_vvclqi

Resolved by adjusting the Start Time (date field) of my Sprint to after I completed all the estimates & started the actual Sprint