Accidentally Start a future sprint, now I cannot complete the current sprint

[Tracy Tseung]

I accidentally clicked to start a future sprint before completing the current sprint. Now the current sprint button is disabled, how to I complete it 

[Constance Hua (Private)]

You need to re-create your future sprint first ("future sprint #2" for example). Then complete the future sprint which is now started and send incomplete issues to the "future sprint #2". 

Then only you will be able to start the sprint you wanted to start instead. (Please note that you need to move the sprint you want to start to the top)