Students unable to clock out in mobile app

Students were unable to clock out through the mobile app. Clicking "Clock out" produces no error message and no visible reaction; the action simply does not go through. The failure is ongoing rather than resolved: because they could not clock out, the affected students were also unable to clock in and out the following day, and the desktop view still shows them as clocked in. Investigate the clock-out failures for the affected accounts on the reported date, correct the stale clocked-in state, and clarify whether an instructor can clock a student out on their behalf as a workaround. (put random link to page where occurred as it was on the app)