Kaltura_Client_Exception thrown

Invalid KS "NGRlN2ZkZTdiNjE5N2U0NjQzMWRjNmNiMTAzYzQyZTVhMjUxYzBlMnwxMDE7OzE0OTg2MzM1Mjc7MjsxNDk4NTQ3MTI3LjU5OTtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"