I\'ve got very simple code to display a map using react-leaflet and place a marker on it. However, i get the following two errors in my browser console
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It seems not all stuff is properly integrated together when using react, leaflet and react-leaflet. I had the same problem and found this
https://github.com/PaulLeCam/react-leaflet/issues/453
You need to setup leafelet itself again, as something brokes after importing leaflet.css.
Hope it helps