Agregue unique a email y errores a register.

Y MERGE LO DE BRYAM (COPIE Y PEGUE)

app/Http/Controllers/RegisterController.php

@@ -13,7 +13,7 @@ class RegisterController extends Controller
     {
         $userData = $request->validate([
             'name' => ['required', 'string'],
-            'email' => ['required', 'email'],
+            'email' => ['required', 'email', 'unique:users,email'],
             'password' => ['required', 'confirmed']
         ]);