中煤调整过户车

src/main/java/com/ydtech/constants/enums/dict/ZmSyTransferType.java

@@ -46,7 +46,7 @@ public enum ZmSyTransferType implements IBaseEnum {
                 return value.desc;
             }
         }
-        return null;
+        return "null";
     }
 
 }