Update index.js

index.js

@@ -143,6 +143,7 @@ app.get('/testdb', async (req, res) => {
             userIds.push(data.owner);
           }
         }
+      res.send(userIds);
     } catch (error) {
         console.error("Failed to get data from DB: " + error);
         res.status(500).send("Error fetching data from database.");