The latest version of Google Maps isn't compatible with JavaFX WebView. Don't use this library. Alternative solution: https://www.b4x.com/android/forum/threads/jsd_openmaps.166066/#content This library is similar to B4A and B4i GoogleMaps libraries. It is based on this open source project...
www.b4x.com
The jgooglemaps.zip download contains v1.82.
Try download with another browser
Or maybe you do have two copies ? one in internal and one in external libs folder.