What causes EntityMetadataWrapperException: Unknown data property? I have added new field to my bundle in one of entity type. I used the Group audience as field type and Group Audience as widget type.
This is to make the field to select multiple records.

While adding the new record with all the values it gives following error:


  EntityMetadataWrapperException: Unknown data property og_membership.
  in EntityStructureWrapper->getPropertyInfo() (line 354 of
  /var/www/vhosts/test1.3blmedia.com/httpdocs/sites/all/modules/entity/includes/entity.wrapper.inc).


I am not getting where it is wrong. Any hints?
Please login to admin and go to following page. You need to add field for your bundle. It will resolve above error. 

Home » Administration » Configuration » Group
Organic groups field settings 

For more details please visit following link.
https://www.drupal.org/node/2023721