Error Adding Tests from Test Plan to Test Execution in Testing Board

Description
When attempting to add tests to a Test Execution from a Test Plan in the Testing Board, an error occurs and no tests are added.

Preconditions

• A Test Plan with tests has been created.

Steps to Reproduce

1. Navigate to Xray's Testing Board.
2. In the menu, select Test Plans.
3. Open an existing Test Plan.
4. Right-click a test or folder.
5. Select Add → Test(s) to Test Execution.
6. Search for and select any Test Execution.

Actual Result / Attachments

• An error message appears: "Unexpected error has occurred".

• The selected tests are not added to the Test Execution.

Expected Result

• The selected tests should be successfully added to the chosen Test Execution.

Version

• Xray Cloud 6.8.0

Workaround

• Tests can still be added directly from the Test Execution.