Kaltura_Client_Exception thrown

Invalid KS "ODRhYjRhNDZiZTQxNTE4MmI5MDk4MmZiMmMyODA3MzEyNmI5ZjQ3Y3wxMDE7OzE1MDA5OTM4NDQ7MjsxNTAwOTA3NDQ0LjY0NjQ7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"