Kaltura_Client_Exception thrown

Invalid KS "ODc0MWJjODFjOWNhOWJlYjhjMGVjMDg4NzJjMmI1ZjAyOGQxN2IyMnwxMDE7OzE0NzQ5MjQ2MDA7MjsxNDc0ODM4MjAwLjc2NzI7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"