map viewer widget: how to show information of a marker with the link of address on it?

Question

I created models by NGSI-LD with the coordinates but i couldn't see any markers icon on the Map Viewer Widget.I only see the 2 markers of NGSI. How can i see the markers with the link googlemap on it?

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I tried to add other location but it didn't work . I expect to display the marker and its information