title: How to resolve this error in Odoo - 8?
body: <p>I restored a database in Odoo and when I perform or click any operations, i am getting this error</p>
  
  <p><strong>AttributeError: Field <code>res_manager</code> does not exist</strong></p>
  
  <p><strong>Error context:
  View <code>res.users.form</code>
  [view_id: 153, xml_id: base.view_users_form, model: res.users, parent_id: n/a]</strong></p>