message: log server errors in edit history dialog
diff: @@ -54,6 +54,10 @@ export default class MessageEditHistoryDialog extends React.PureComponent {
  result = await MatrixClientPeg.get().relations(
  roomId, eventId, "m.replace", "m.room.message", opts);
  } catch (error) {
  + // log if the server returned an error
  + if (error.errcode) {
  + console.error("fetching /relations failed with error", error);
  + }
  this.setState({error}, () => reject(error));
  return promise;
  }
  