Kaltura_Client_Exception thrown

Invalid KS "OTRiZDI4MTZkM2VkMGNmMzEzYzZjMjEzZjE3MzczZTBkYjE3NjA2OXwxMDE7OzE0OTg0MDc2MjE7MjsxNDk4MzIxMjIxLjQzNTtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"