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java.lang.NullPointerException: 	at com.graphhopper.storage.MMapDataAccess.getInt(MMapDataAccess.java:313)	at com.graphhopper.storage.EdgeAccess.getOtherNode(EdgeAccess.java:146)	at com.graphhopper.storage.BaseGraph$EdgeIterable.next(BaseGraph.java:1036)	at com.graphhopper.routing.AStarBidirection.fillEdges(AStarBidirection.java:240)	at com.graphhopper.routing.AStarBidirection.fillEdgesTo(AStarBidirection.java:229)	at com.graphhopper.routing.AbstractBidirAlgo.runAlgo(AbstractBidirAlgo.java:75)	at com.graphhopper.routing.AbstractBidirAlgo.calcPath(AbstractBidirAlgo.java:63)	at com.graphhopper.routing.AbstractRoutingAlgorithm.calcPaths(AbstractRoutingAlgorithm.java:120)	at com.graphhopper.routing.template.ViaRoutingTemplate.calcPaths(ViaRoutingTemplate.java:110)	at com.graphhopper.GraphHopper.calcPaths(GraphHopper.java:1098)	at com.graphhopper.GraphHopper.route(GraphHopper.java:1003)	at com.darekk.service.nawigacjaoffline.app.tasks.RoutingTask.doInBackground(RoutingTask.java:107)	at com.darekk.service.nawigacjaoffline.app.tasks.RoutingTask.doInBackground(RoutingTask.java:21)	at android.os.AsyncTask$2.call(AsyncTask.java:287)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)