Update index.js

index.js

@@ -31,10 +31,10 @@ app.get('*', async (req, res) => {
       data: file.data
     })
     if (upload_result.status == 200) {
-      res.send(JSON.stringify({
+      res.json({
         vid: upload_info.data.vid,
         url: `https://sf16-sg-default.akamaized.net/obj/${upload_info.data.uri}`
-      }))
+      })
     } else {
       throw Error
     }