I have seen that time different function is creating an issue
location: wp-content/plugins/aio-time-clock/aio-timeclock-functions.php
Line no: 1979
Old Code: $time_total = aio_date_difference($employee_clock_in_time, $employee_clock_out_time);
New Code: $time_total = aio_date_difference(str_replace(‘/’, ‘-‘, $employee_clock_in_time), str_replace(‘/’, ‘-‘, $employee_clock_out_time));
Kindly update this code to your new version.