Call initializeCalendar() only if #calendar exists

public/js/mc.js

@@ -191,6 +191,7 @@ function openInRHS(_url) {
 }
 
 function initializeCalendar() {
+    if(!$('#calendar').length) return;
     var calendarEl = document.getElementById('calendar');
     var calendar = new FullCalendar.Calendar(calendarEl, {
         initialView: 'dayGridMonth'