www.google.com/calendar/ical/spielplan.1.bundesliga%40gmail.com/public/basic.ics

THANK YOU…it worked… now i have do work at the google calender… thx Sean!!

That iCal url of above sample is out-of-date.
Try another URL(webcal://www.google.com/calendar/ical/spielplan.1.bundesliga%40gmail.com/public/basic.ics) or yours.

{
      //disabled:true,
      module: 'MMM-CalendarExt',
      position: "top_center",
      config: {
        system: {
          show: ["daily", "upcoming"],
          locale: 'en',
          redrawInterval:60000,
        },
        views: {
          daily: {
            position:'bottom_bar',
            counts:7,
          },
          upcoming: {
            position:'top_left',
            limit:5
          },
        },
        defaultCalendar: {
          maxEntries:50,
          maxDays:180,
          interval: 1000*60*5,
        },
        calendars :[
          {
            name: "deutschland",
            symbol: "calendar-o",
            styleName: "style1",
            url: "http://www.kayaposoft.com/enrico/ics/v1.0?country=deu&fromDate=01-01-2017&toDate=31-12-2017&region=Hesse"
          },
        ],
      }
    },

I think you just copied my configuration sample. It has no bugs. try it again.
(Anyway, that sample is out-of-date, so there is no event to display at this moment.)

name: “deutschland”,

“ is not proper double-quotation mark for javascript. Instead, you should use ".
So, it should be like this;

name: "deutschland",

You could remove and re-insert sections one-by-one to check which section has a problem.

/*************** DO NOT EDIT THE LINE BELOW ***************/
if (typeof module !== “undefined”) {module.exports = config;}