message: added missing guard
diff: @@ -262,7 +262,7 @@ export default class CardManipulator extends Component {
  }
  yield this.patchCard.perform(doc);
  - if (this.selectedField.name === fieldName || this.selectedFieldName === fieldName) {
  + if ((this.selectedField && this.selectedField.name === fieldName) || this.selectedFieldName === fieldName) {
  this.cardSelected = true;
  this.selectedFieldName = null;
  this.selectedField = null;
  