I am using that https://github.com/angular-ui/ui-calendar to use the FullCalendar in Angularjs.
It displays the calendar and showing no errors;
What worked me is.
Instead of this.
$scope.eventSources = [$scope.myEvents, $scope.someOtherArray, $scope.otherEvents];
TRY THIS
$scope.eventSources.push($scope.myEvents);