Bug #1765276: Fixed broken datepicker by changing the file needed

Change-Id: I1fff34cd2c6ca262c9329add6ab144e066256392

htdocs/lib/pieforms/pieform/elements/calendar.php

@@ -267,7 +267,7 @@ function pieform_element_calendar_get_headdata($element) {
 
     $libjs = $element['jsroot'] . 'js/jquery-ui.min.js';
     $libcss = $element['jsroot'] . 'css/smoothness/jquery-ui.min.css';
-    $bootstrapdatetimejs = '/js/bootstrap-datetimepicker/bootstrap-datetimepicker.min.js';
+    $bootstrapdatetimejs = '/js/bootstrap-datetimepicker/tempusdominus-bootstrap-4.js';
     $momentjs = '/js/momentjs/moment-with-locales.min.js';
     $prev = get_string('datepicker_prevText');
     $next = get_string('datepicker_nextText');