message: Fix getReadReceiptsForEvent for unknown threads
diff: @@ -835,6 +835,13 @@ export default class MessagePanel extends React.Component<IProps, IState> {
  : room;
  const receipts: IReadReceiptProps[] = [];
  +
  + if (!receiptDestination) {
  + logger.debug("Discarding request, could not find the receiptDestination for event: "
  + + this.context.threadId);
  + return receipts;
  + }
  +
  receiptDestination.getReceiptsForEvent(event).forEach((r) => {
  if (
  !r.userId ||
  