Kaltura_Client_Exception thrown

Invalid KS "N2VhODQyNzcxN2Q0Njk3OGNlM2Y5NDIzNDYyYWZlMTBjZjM3ODE4ZnwxMDE7OzE0ODA4NDQ3MDA7MjsxNDgwNzU4MzAwLjU0ODtBbm9ueW1vdXM7ZWRpdDoq", Error "-1,INVALID_STR"