Kaltura_Client_Exception thrown

Invalid KS "ZmQ0NDc5ZmE0YzEyZDk3MzAwNzE1NzkxZDFjZWQwZjAzZDljNzgyMXwxMDE7OzE0NzQ5OTgzNTU7MjsxNDc0OTExOTU1LjM4MDE7QW5vbnltb3VzO2VkaXQ6Kg==", Error "-1,INVALID_STR"