Kaltura_Client_Exception thrown

Invalid KS "ZDE4YmQ2NjIxYjg4OGUyYmM2ZWIwOTk1N2JlOWFkNzNjMjUyZTljOXwxMDE7OzE0OTMyMzE4NjI7MjsxNDkzMTQ1NDYyLjc2NDtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"