update

lib/service/crud-service.js

@@ -310,7 +310,7 @@ class CrudService extends NafService {
     let schema = null;
     let version = mongoose.version;
     version = parseInt(version.split('.').join(''));
-    if(version<600) schema = _.get(model, 'prototype.schema.obj');
+    if(version<573) schema = _.get(model, 'prototype.schema.obj');
     else schema = _.get(model, 'prototype.schema.obj.obj');
     return schema;
   }