The bulk purge trash functionlality under advanced space functionality throws an error

Steps:

-Navigate to Space tools> Advanced space functionality.

-Go to Built in scripts> Bulk purge trash

-Without selecting the 'All spaces' check box, select a space in the target spaces and click on Run.

Actual Result:

-The page throws an error when run is clicked

(See attached screenshot)

-No error is thrown when the All spaces checkbox is checked

Expected Result:

The Bulk purge trash functionality should work fine as expected.

Tested using:

Confluence: 6.15.10,7.3.1

SR: 5.6.15(marketplace version), 5.6.16