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java.lang.UnsupportedOperationException: 	at java.util.Collections$UnmodifiableMap.put(Collections.java:1342)	at net.osmand.data.preparation.IndexRouteCreator.iterateMainEntity(IndexRouteCreator.java:175)	at net.osmand.data.preparation.IndexCreator.iterateMainEntity(IndexCreator.java:252)	at net.osmand.data.preparation.IndexCreator.access$200(IndexCreator.java:50)	at net.osmand.data.preparation.IndexCreator$7.iterateEntity(IndexCreator.java:758)	at net.osmand.data.preparation.OsmDbAccessor.iterateOverEntities(OsmDbAccessor.java:252)	at net.osmand.data.preparation.OsmDbAccessor.iterateOverEntities(OsmDbAccessor.java:206)	at net.osmand.data.preparation.IndexCreator.iterateMainEntities(IndexCreator.java:755)	at net.osmand.data.preparation.IndexCreator.generateIndexes(IndexCreator.java:596)	at net.osmand.data.preparation.IndexCreator.generateIndexes(IndexCreator.java:518)	at net.osmand.swing.OsmExtractionUI$13.run(OsmExtractionUI.java:547)	at net.osmand.swing.ProgressDialog$WorkerThread.run(ProgressDialog.java:87)