Kaltura_Client_Exception thrown

Invalid KS "ODQ0NjBmZjI5NjQyZDdmNGE2MzA0ZDllMTk1ZmJlODZhODMxMDFlN3wxMDE7OzE0OTgzOTQ3MjE7MjsxNDk4MzA4MzIxLjcyMjE7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"