fix

lib/material/profile.dart

@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:momo/provider/token.dart';
+
+class Profile extends ConsumerWidget {
+  const Profile({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    return Center(
+      child: ElevatedButton(
+          onPressed: () {
+            ref.watch(tokenProvider.notifier).removeToken();
+          },
+          child: const Text('quit')),
+    );
+  }
+}