We are no longer able to access our Sprint Performance Report or the Sprint report (accessed from our sprint board), this worked before and it is happening on all projects. How can I troubleshoot and fix this?
Our permissions haven't changed, it is happening for all users.

The audit report didn't show any changes made around settings.
I verified that this happens for multiple projects.
I'm able to access all reports under 'Reports' module so the data is accessible still.