message: checks for sale in mount
diff: @@ -22,6 +22,10 @@ export class AuctionCountDownTimer extends React.Component<AuctionCountDownTimer
  componentDidMount() {
  const { sale } = this.props.artwork
  + if (!sale) {
  + return
  + }
  +
  this.interval = setInterval(() => {
  if (DateTime.local() > sale.startAt) {
  this.setState({
  