return empty list when there are no service dependencies
diff --git a/xos/core/xoslib/methods/vtn.py b/xos/core/xoslib/methods/vtn.py
index 1a2af53..c9dbf3a 100644
--- a/xos/core/xoslib/methods/vtn.py
+++ b/xos/core/xoslib/methods/vtn.py
@@ -57,7 +57,8 @@
for xos_service in Service.objects.all():
if service in xos_service.get_vtn_src_ids():
return Response(xos_service.get_vtn_dependencies_ids())
- raise DoesNotExist()
+ return Response([])
+ # raise DoesNotExist()
def list(self, request):
raise Exception("Not Implemented")