error on event tab

[cloudstrife012]

Warning: Use of undefined constant absolute - assumed 'absolute' (this will throw an Error in a future version of PHP) on line 69

[Gokulramms]

Modify this line:
$diff = date_diff($date1, $date2, absolute);
to:
$diff = date_diff($date1, $date2, true);

this will clear the error