Broke sum.js

dao/sum.js

 function sum(a, b) {
-  return a + b;
+  return a - b;
 }
-module.exports = sum;
\ No newline at end of file
+module.exports = sum;

server.js

@@ -47,7 +47,7 @@ app.delete("/person/:personId"), (req, res) => {
         res.status(status);
         res.json(data);
     });
-}
+};
 
 app.put("/person/:personId"), (req, res) => {
     console.log("Updating person :personId");
@@ -55,6 +55,6 @@ app.put("/person/:personId"), (req, res) => {
         res.status(status);
         res.json(data);
     });
-}
+};
 
 var server = app.listen(8080);