To recreate: Checkout an item to a patron without anonymization and check it back in. Do a call to your instance (may need to turn on api basic auth and just use your credentials) that includes the date in question, see that you get a result. Delete the patron and send the call again, you'll get the error message at the bottom of the comment. This is a problem with third party report services. {ktdurl}/api/v1/checkouts?q={"checkout_date":{">": "2026-01-24T00:00:00Z","<": "2026-07-31T00:00:00Z"}}&checked_in=true&_per_page=5000&_page=1&_order_by=checkout_date Recreated on main, seeing it back at least to old stable. { "errors": [ { "message": "Expected integer - got null.", "path": "/body/0/patron_id" },
Now I can't recreate on main, but I'm getting a booking related error instead. This might be fixed and my git worktrees were messed up.
Recreated on main, working on a patch.