Steps to reproduce the issue

1. Create some privacy request for removal of data.
2. Login into admin panel and open the view of this request (https:///administrator/index.php?option=com_privacy&view=request&id=1).
3. Try to delete the data via "Delete Data" button.

Expected result

The data is deleted.

Actual result

Empty window with only "The most recent request was denied because it had an invalid security token. Please refresh the page and try again." is displayed.

System information (as much as possible)

I am using Joomla 3.9.20.

Additional comments

It looks like the CSRF token is not passed while deleting trough this button.