Merge pull request #1388 from metasfresh/dev-1360-hotfix

check if cell is valid #1360

src/components/table/TableItem.js

@@ -166,7 +166,7 @@ class TableItem extends Component {
                 const supportFieldEdit = mainTable &&
                     this.isAllowedFieldEdit(item);
                 const property = item.fields[0].field;
-                let isEditable = ((cells[property] &&
+                let isEditable = ((cells && cells[property] &&
                     cells[property].viewEditorRenderMode
                 ) || item.viewEditorRenderMode
                     ) === VIEW_EDITOR_RENDER_MODES[2];