OSB-31: fixed key error

LCU/Maintenance/MDB_WebView/maintenancedb_view/src/components/StationTestView.js

@@ -110,7 +110,7 @@ class GenericStatus extends Component {
                             </ul>)
                     }
                     errorDetails.push(
-                        <React.Fragment key={key}>
+                        <React.Fragment key={key + polarization}>
                             <div><em>{polarization} - {item.error_type}</em></div>
                             {renderDetails}
                         </React.Fragment>