fix(roles): handle errors properly in edit role API

src/components/Sidebar.jsx

@@ -6,6 +6,7 @@ import {
   Settings, 
   Menu, 
   X,
+  Users,
   Shield
 } from 'lucide-react';
 
@@ -14,6 +15,7 @@ const Sidebar = ({ isOpen, onToggle }) => {
     { name: 'Dashboard', href: '/', icon: LayoutDashboard },
     { name: 'Transactions', href: '/transactions', icon: CreditCard },
     { name: 'Roles', href: '/roles', icon: Shield },
+    { name: 'Users', href: '/users', icon: Users },
     { name: 'Settings', href: '/settings', icon: Settings },
   ];