Sometimes, when trying to draw a mapsforge view of the graph, the following exception is thrown:
Exception in thread "Thread-11" java.lang.NullPointerException
at org.mapsforge.core.util.LatLongUtils.zoomForBounds(LatLongUtils.java:410)
at org.insa.graphics.drawing.components.MapViewDrawing.drawGraph(MapViewDrawing.java:406)
at org.insa.graphics.MainWindow$6.run(MainWindow.java:522)
at java.lang.Thread.run(Thread.java:748)
Sometimes, when trying to draw a mapsforge view of the graph, the following exception is thrown:
```
Exception in thread "Thread-11" java.lang.NullPointerException
at org.mapsforge.core.util.LatLongUtils.zoomForBounds(LatLongUtils.java:410)
at org.insa.graphics.drawing.components.MapViewDrawing.drawGraph(MapViewDrawing.java:406)
at org.insa.graphics.MainWindow$6.run(MainWindow.java:522)
at java.lang.Thread.run(Thread.java:748)
```
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Sometimes, when trying to draw a mapsforge view of the graph, the following exception is thrown: