Catch invalid calendar objects

		const calendarObjects = []

		const calendarObjectIds = []

		for (const r of response.concat(responseTodo)) {

			try {

				const calendarObject = mapCDavObjectToCalendarObject(r, calendar.id)

				calendarObjects.push(calendarObject)

				calendarObjectIds.push(calendarObject.id)

			} catch (e) {

				console.error('could not convert calendar object', e)

			}

		}

		context.commit('appendCalendarObjects', { calendarObjects })