Trouble with changing default holiday/calendar (dutch)

[Christiaan99]

@sdetweil i have done tried this now:

module: "calendar",
			header: "Vakantie/Kalender",
			position: "top_left",
			config: {
				calendars: [
					{
						symbol: "calendar-check",
						//url: "webcal://www.calendarlabs.com/ical-calendar/ics/76/_Holidays.ics",					
						//url: "https://www.officeholidays.com/ics/netherlands",
						file: "///default/calendar/nederland.ics",
						}
				]

It gives me a black screen now

[sdetweil]

@Christiaan99 no. The

url: "file:///......"