Update frontend/src/App.js

frontend/src/App.js

@@ -164,7 +164,7 @@ const App = () => {
                   )}
                 </td>
                 {["Average", "GAIA", "MATH", "SimpleQA"].map(metric => (
-                  <td key={metric}>
+                  <td key={metric + ` subset`}>
                     <ScoreBar score={item.scores[metric]} isVanilla={false}/>
                     {showVanilla && getVanillaScore(item.model_id, metric) !== undefined && (
                       <ScoreBar score={getVanillaScore(item.model_id, metric)} isVanilla={true}/>