Kaltura_Client_Exception thrown

Invalid KS "NzI0M2UxY2NiYmNjM2YyNDk4ZWRiOWU3OWJiOTRjNDU2MGQxMGQ3Y3wxMDE7OzE0OTg0NTU3MDI7MjsxNDk4MzY5MzAyLjcyOTtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"