after I fixed the error Route [Login] not defined, I can't log in even though I use the correct email and password - laravel-8

Question

this is web.php
Route::get('/login', [LoginController::class, 'index'])->name('login')->middleware('guest');
Route::post('/login', [LoginController::class, 'authenticate']);
Route::post('/logout', [LoginController::class, 'logout']);
this is my LoginController
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
class LoginController extends Controller
{
public function index()
{
return view('login.index', [
'title' => 'Login'
]);
}
public function authenticate(Request $request)
{
$credentials = $request->validate([
'email' => 'required|email:dns',
'password' => 'required'
]);
if (Auth::attempt($credentials)) {
$request->session()->regenerate();
return redirect()->intended('/admin');
}
return back()->with('loginError', 'Login anda gagal !');
}
public function logout(Request $request)
{
Auth::logout();
$request->session()->invalidate();
$request->session()->regenerateToken();
return redirect('/login');
}
}
this is my login view
<main class="form-signin">
#if (session()->has('Sukses'))
<div class="alert alert-success alert-dismissible fade show" role="alert">
{{ session('Sukses') }}
<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>
#endif
#if (session()->has('loginError'))
<div class="alert alert-danger alert-dismissible fade show" role="alert">
{{ session('loginError') }}
<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>
#endif
<form action="/login" method="post">
#csrf
<img class="mb-4" src="/img/discord.png" alt="" width="100" height="99">
<h1 class="h3 mb-3 fw-normal">Please Login</h1>
<div class="form-floating">
<input type="email" name="email" class="form-control #error('email') is-invalid #enderror" id="email" placeholder="name#example.com" autofocus required value="{{ old('email') }}">
<label for="email">Masukkan Email</label>
#error('email')
<div class="invalid-feedback">
{{ $message }}
</div>
#enderror
</div>
<div class="form-floating">
<input type="password" name="password" class="form-control" id="password" placeholder="Password" required>
<label for="password">Password</label>
</div>
<button class="w-100 btn btn-lg btn-primary" type="submit">Login</button>
</form>
<small class="d-block text-center mt-3">Not have any account? Register here</small>
<p class="mt-5 mb-3 text-muted">© 2022</p>
</main>