zone loading

src/engine/db/handlers/dbMineHandler.java

@@ -9,6 +9,7 @@
 package engine.db.handlers;
 
 import engine.Enum;
+import engine.gameManager.BuildingManager;
 import engine.gameManager.DbManager;
 import engine.objects.Mine;
 import engine.objects.MineProduction;
@@ -87,6 +88,9 @@ public class dbMineHandler extends dbHandlerBase {
 
             ResultSet rs = preparedStatement.executeQuery();
             while(rs.next()){
+                if(BuildingManager.getBuildingFromCache(rs.getInt("mine_buildingUID")) == null)
+                    continue;
+
                 mines.add(new Mine(rs));
             }