Sprint Health Gadget failing intermittently

Summary

The Jira gadget, Sprint Health gadget, fails intermittently in Confluence pages. For some projects, the boards are displayed in the gadget as expected, but for other projects the user is given the following error message: "Could not load the sprint data for the selected board.".
 

Steps to Reproduce

1. Create a page in Confluence;
2. Add the Sprint Health gadget;
3. Select a project to display the board.

Expected Results

• The board is displayed containing the Sprint information;

Actual Results

• The board is displayed for some projects intermittently, for other projects the user is given the following error message: "Could not load the sprint data for the selected board.".

Workaround

No workaround.