MMM-MyCalendar stuck on loading

[ganget]

Heey I have installed your MMM-MyCalendar module last week and can’t make it work. Even the default config is stuck on loading… The default calendar module works fine. But i like the lay-out of this one allot more. Can you help me with fixing this?

This is my config: (copied and pasted from MMM-MyCalendar.js)

		{
			module: "MMM-MyCalendar",
			header: "Huize Achterom",
			position: "top_left",
			config: {
				maximumEntries: 10, // Total Maximum Entries
				maximumNumberOfDays: 365,
				displaySymbol: true,
				defaultSymbol: "calendar", // Fontawesome Symbol see http://fontawesome.io/cheatsheet/
				displayRepeatingCountTitle: false,
				defaultRepeatingCountTitle: "",
				maxTitleLength: 25,
				fetchInterval: 5 * 60 * 1000, // Update every 5 minutes.
				animationSpeed: 2000,
				fade: true,
				urgency: 7,
				useRelativeDates: false,
				dayOfWeekFormat: "dddd",
				dateFormat: "MMMM D",
				timeFormat: "h:mm A",
				joiningWord: "at",
				getRelative: 6,
				fadePoint: 0.25, // Start on 1/4th of the list.
				hidePrivate: false,
				colored: false,
				calendars: [
					{
					symbol: "calendar",
					url: "http://www.calendarlabs.com/templates/ical/US-Holidays.ics",
					},
				],
			}
		},