CORS issue with "child" path

❗unsolved

app.use(
  cors({
    origin: ["http://localhost:5173/"],
  })
);

app.use(
  cors({
    origin: ["http://localhost:5173/"],
  })
);

Hello, this is the code used to enable CORS for this particular route. When I try to send a request from

http://localhost:5173/api/registration

http://localhost:5173/api/registration

though, it seems I get an error like if child path isn't allowed to receive responses, anyone has an idea of what might be happening pls