In "Version : 12.0.0 for Mac OS X x86 (64-bit) (April 7, 2019)", when I input the following code on the notebook,
GeoGraphics[{EdgeForm[Black],
Polygon[EntityClass["Country", "Korea"]]},
GeoRange -> {{33, 39}, {125, 130}},
GeoProjection -> "Equirectangular",
GeoBackground -> GeoStyling["ReliefMap"],
GeoGridLines -> Quantity[15, "AngularDegrees"], Frame -> True]
I got an error message : GeoElevationData::etiles: Unable to download 9 tiles of geo elevation data. Actually, this code had worked very well just few days ago. Why suddenly it doesn't work ? If someone knows the reason, please would you reply for that ?
Thanks a lot !