warning changed to debug info

model/src/main/java/lcsb/mapviewer/model/graphics/PolylineData.java

@@ -284,7 +284,7 @@ public class PolylineData implements Serializable {
     Point2D last2 = points.get(points.size() - 2);
     double oldDist = last.distance(last2);
     if (distToTrim < 0 && oldDist <= Configuration.EPSILON) {
-      logger.warn("Cannot extend empty line");
+      logger.debug("Cannot extend empty line");
       last.setLocation(last2);
     } else if (oldDist <= distToTrim) {
       last.setLocation(last2);