For Static Website - getting "Terrain Server Not Responding"

[mattpgreen]

Hi - can someone please help me with this very newbie matter?

I've set up a static website and am getting this message on startup -

"Terrain Server Not Responding

The terrain server is not responding at the moment. You can still use all the features of Northern Australia Sustainability Map but there will be no terrain detail in 3D mode. ..."

I've spend a few hours looking for the config - and am now asking here ... I had pasted "useCesiumIonTerrain": true, into the parameters of config.json but still getting the error.

Thanks, Matt