Laravel 9 - ERROR: Auth guard [ admin] is not defined - laravel

Question

I'm trying to create an Admin Login in Laravel Jetstream. I've created a separate admins table to store the login data. However, I get an error saying Auth guard [ admin] is not defined when I try to access the admin login page through http://localhost:8000/admin/login.
I tried php artisan config:clear and php artisan config:cache commands, but they didn't solve the issue.
auth.php
'guards' => [
'web' => [
'driver' => 'session',
'provider' => 'users',
],
'admin' => [
'driver' => 'session',
'provider' => 'admins',
],
],
'providers' => [
'users' => [
'driver' => 'eloquent',
'model' => App\Models\User::class,
],
'admins' => [
'driver' => 'eloquent',
'model' => App\Models\Admin::class,
],
],
'passwords' => [
'users' => [
'provider' => 'users',
'table' => 'password_resets',
'expire' => 60,
'throttle' => 60,
],
'admins' => [
'provider' => 'admins',
'table' => 'password_resets',
'expire' => 60,
'throttle' => 60,
],
],
web.php
Route::get('/', function () {
return view('welcome');
});
Route::group(['prefix' => 'admin', 'middleware' => ['admin:admin']], function () {
Route::get('/login', [AdminController::class, 'loginForm']);
Route::post('/login', [AdminController::class, 'store'])->name('admin.login');
});
Route::middleware(['auth:sanctum, admin', config('jetstream.auth_session'), 'verified'])->group(function () {
Route::get('/admin/dashboard', function () {
return view('dashboard');
})->name('dashboard');
});
Route::middleware(['auth:sanctum, web', config('jetstream.auth_session'), 'verified'])->group(function () {
Route::get('/dashboard', function () {
return view('dashboard');
})->name('dashboard');
});
AdminController
public function loginForm()
{
return view('auth.login', ['guard' => 'admin']);
}
AdminRidirectIfAuthenticated.php
public function handle(Request $request, Closure $next, ...$guards)
{
$guards = empty($guards) ? [null] : $guards;
foreach ($guards as $guard) {
if (Auth::guard($guard)->check()) {
return redirect($guard . '/dashboard');
}
}
return $next($request);
}
LoginResponse.php
public function toResponse($request)
{
return $request->wantsJson()
? response()->json(['two_factor' => false])
: redirect()->intended('admin/dashboard');
}
Kernel.php
protected $routeMiddleware = [
'auth' => \App\Http\Middleware\Authenticate::class,
'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
'auth.session' => \Illuminate\Session\Middleware\AuthenticateSession::class,
'cache.headers' => \Illuminate\Http\Middleware\SetCacheHeaders::class,
'can' => \Illuminate\Auth\Middleware\Authorize::class,
'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
'admin' => \App\Http\Middleware\AdminRedirectIfAuthenticated::class,
'password.confirm' => \Illuminate\Auth\Middleware\RequirePassword::class,
'signed' => \Illuminate\Routing\Middleware\ValidateSignature::class,
'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
'verified' => \Illuminate\Auth\Middleware\EnsureEmailIsVerified::class,
];
FortifyServiceProvider.php
use App\Http\Controllers\AdminController;
use Illuminate\Contracts\Auth\StatefulGuard;
use Illuminate\Support\Facades\Auth;
use App\Actions\Fortify\AttemptToAuthenticate;
use App\Actions\Fortify\RedirectIfTwoFactorAuthenticatable;
public function register()
{
$this->app->when([AdminController::class, AttemptToAuthenticate::class, RedirectIfTwoFactorAuthenticatable::class])
->needs(StatefulGuard::class)
->give(function () {
return Auth::guard('admin');
});
}
login.blade.php
<form method="POST" action="{{ isset($guard) ? url($guard.'/login') : route('login') }}">
#csrf
..............
</form>
AdminStatefulGuard.php
use Illuminate\Contracts\Auth\Authenticatable;
use Illuminate\Contracts\Auth\Guard;
interface AdminStatefulGuard extends Guard
{
/**
* Attempt to authenticate a user using the given credentials.
*
* #param array $credentials
* #param bool $remember
* #return bool
*/
public function attempt(array $credentials = [], $remember = false);
/**
* Log a user into the application without sessions or cookies.
*
* #param array $credentials
* #return bool
*/
public function once(array $credentials = []);
/**
* Log a user into the application.
*
* #param \Illuminate\Contracts\Auth\Authenticatable $user
* #param bool $remember
* #return void
*/
public function login(Authenticatable $user, $remember = false);
/**
* Log the given user ID into the application.
*
* #param mixed $id
* #param bool $remember
* #return \Illuminate\Contracts\Auth\Authenticatable|bool
*/
public function loginUsingId($id, $remember = false);
/**
* Log the given user ID into the application without sessions or cookies.
*
* #param mixed $id
* #return \Illuminate\Contracts\Auth\Authenticatable|bool
*/
public function onceUsingId($id);
/**
* Determine if the user was authenticated via "remember me" cookie.
*
* #return bool
*/
public function viaRemember();
/**
* Log the user out of the application.
*
* #return void
*/
public function logout();
}

Answer 1

Remove space before middleware parameter at web.php
Remove space before admin at 'auth:sanctum, admin'