fix bugs
diff --git a/xos/services/cord/models.py b/xos/services/cord/models.py
index 7cd20cb..2460ec7 100644
--- a/xos/services/cord/models.py
+++ b/xos/services/cord/models.py
@@ -8,7 +8,7 @@
 from operator import itemgetter, attrgetter, methodcaller
 from core.models import Tag
 from core.models.service import LeastLoadedNodeScheduler
-from services.vrouter import VRouterService, VRouterTenant
+from services.vrouter.models import VRouterService, VRouterTenant
 import traceback
 from xos.exceptions import *
 from xos.config import Config