Kaltura_Client_Exception thrown

Invalid KS "ZDQ3YTY3ZTU5ODA2NTgxYmEwODQyNjRmM2VmMjEzYzE5ZjMyY2IxYnwxMDE7OzE0NzQ4NTczNDU7MjsxNDc0NzcwOTQ1LjAwMzI7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"