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java.lang.NullPointerException at com.github.rinde.rinsim.core.model.road.GraphSpatialRegistry.getConnection(GraphSpatialRegistry.java:133) at com.github.rinde.rinsim.core.model.road.GraphRoadModelImpl.getConnection(GraphRoadModelImpl.java:478) at com.github.rinde.rinsim.ui.renderers.AGVRenderer$VehicleUI.update(AGVRenderer.java:294) at com.github.rinde.rinsim.ui.renderers.AGVRenderer.renderDynamic(AGVRenderer.java:98) at com.github.rinde.rinsim.ui.SimulationViewer.paintControl(SimulationViewer.java:492) at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source) at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) at org.eclipse.swt.widgets.Composite.WM_PAINT(Unknown Source) at org.eclipse.swt.widgets.Control.windowProc(Unknown Source) at org.eclipse.swt.widgets.Canvas.windowProc(Unknown Source) at org.eclipse.swt.widgets.Display.windowProc(Unknown Source) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(Unknown Source) at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) at com.github.rinde.rinsim.ui.View.show(View.java:153) at com.github.rinde.rinsim.core.Simulator.start(Simulator.java:186) at Environment.run(Environment.java:136) at Environment.main(Environment.java:61)