Kaltura_Client_Exception thrown

Invalid KS "YjA0YjE3NjJhNDdjOWQ4ZTBhZjdlZWEzMmVkM2ZkMjBkOWM0ZTgyNHwxMDE7OzE0NzU0NDE3ODM7MjsxNDc1MzU1MzgzLjYzODtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"