Index: frontend/src/App.tsx
===================================================================
--- frontend/src/App.tsx	(revision 2730163380202029196d71a92f0cbde3dfdd5b0a)
+++ frontend/src/App.tsx	(revision 3de009b3a9676182b474a121be9e8d177d692101)
@@ -51,5 +51,5 @@
       },
       {
-        path: "/users/:userId",
+        path: "/users/:username",
         element: <UserDetail />,
       },