new maintenance completed

src/engine/gameManager/MaintenanceManager.java

@@ -172,8 +172,11 @@ public enum MaintenanceManager {
         setMaintDateTime(tol, tol.maintDateTime.plusDays(1)); //failed to pay maintenance, set next date for tomorrow
         if(tol.getRank() == 1)
             destroyAllCityAssets(tol.getCity());
+        try {
+           tol.destroyOrDerank(null);
+        }catch(Exception e){
 
-        tol.destroyOrDerank(null);
+        }
     }
     public static void destroyAllCityAssets(City city){
         if(city == null)