meteor - TypeError: callback is not a function -

i adding events calendar.

============this code============

events: function (start, end , callback) {             var events = [];             calevents=events.find();             calevents.foreach(function(evt){                 events.push({                     id:evt._id,                     title:evt.title,                     start:evt.date,                 });             });             console.log(events);             callback(events);         }, 

but in console, getting error , none of events showing on calendar.

typeerror: callback not function

if @ the docs fullcalendar, can see it's expecting third argument before callback: timezone.

function( start, end, timezone, callback ) { } 

therefore right now, code using timezone (which named callback) function, , doesn't much. add timezone in code shown above, , callback should work.