Hello, we are having an issue when we want to close out our current sprint. Per the screenshot below, you can see we have 12 done issues and 3 in progress. When we press the complete sprint button, the prompt window shows that all 15 issues are open and forces us to move them to another sprint/backlog. Note - All our issues are of 'task' types.

Can someone help us on this issue please?
Thanks,
Saxon