Kaltura_Client_Exception thrown

Invalid KS "MmUzODM4ODE3YjUxOTY1YjNkYjFjMzY5NmI1MGFjMDNjOWQyZDUxOHwxMDE7OzE0NzUzNjE5MTI7MjsxNDc1Mjc1NTEyLjkwNTQ7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"