WIP: Resolve "Leave tournament"

Closes #42 (closed)

backend/api/rounds.js

@@ -226,7 +226,7 @@ router.get("specific/:tournamentId/:playerId/:roundNr", (req, res) => {
           }
           res.json(result);
         })
-        .catch(err => console.log(err));
+        .catch(err => res.sendStatus(500));
     }
   );
 });