Follow the steps below on What to Do When You Can’t Complete Sprint
1. Go to “Active Sprint” (You can’t complete sprint if there are tasks in the wrong column, or statuses are not mapped – note they can be hidden)
2. Click on the three dots (upper right corner)
3. Click on “Board Settings” and go to “Columns”
4. Find if there are unmapped Statuses to Columns that have issues (for example Cancelled should be mapped to done)
5. Go back to “Active Sprint”
6. Click on “Complete Sprint”