Kaltura_Client_Exception thrown

Invalid KS "OGJiODQzNzczNzA5NGZiYTlmMTc5MWFjYjZhMGE1OTgwOTUzOTI0NXwxMDE7OzE0NjcwNjEwNDI7MjsxNDY2OTc0NjQyLjExMTg7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"