fix bug when getting default VTRService
diff --git a/xos/api/tenant/truckroll.py b/xos/api/tenant/truckroll.py
index ea0200d..b5e9e3f 100644
--- a/xos/api/tenant/truckroll.py
+++ b/xos/api/tenant/truckroll.py
@@ -14,7 +14,7 @@
 def get_default_vtr_service():
     vtr_services = VTRService.get_service_objects().all()
     if vtr_services:
-        return vtr_services[0].id
+        return vtr_services[0]
     return None
 
 class VTRTenantForAPI(VTRTenant):