Undefined type Laravel\Sanctum\HasApiTokens in Laravel 8

Need someone to help me with this issue. Laravel Sanctum

I've installed basic default laravel 8++ on my local server.

I follow the instruction of Laravel Sanctum. But I stuck on getting the HasApiTokens

1. composer require laravel/sanctum
2. php artisan vendor:publish --provider="Laravel\Sanctum\SanctumServiceProvider"
3. php artisan migrate

I add in my kernel.php like below

use Laravel\Sanctum\Http\Middleware\EnsureFrontendRequestsAreStateful;

'api' => [
    EnsureFrontendRequestsAreStateful::class,
    'throttle:api',
    \Illuminate\Routing\Middleware\SubstituteBindings::class,
],

And in config>auth.php, I changed the driver to 'sanctum'

 'guards' => [
        'web' => [
            'driver' => 'session',
            'provider' => 'users',
        ],

        'api' => [
            'driver' => 'sanctum',
            'provider' => 'users',
            'hash' => false,
        ], 
    ],

And here's my composer.json

{
    "name": "laravel/laravel",
    "type": "project",
    "description": "The Laravel Framework.",
    "keywords": [
        "framework",
        "laravel"
    ],
    "license": "MIT",
    "require": {
        "php": "^7.3|^8.0",
        "fideloper/proxy": "^4.4",
        "fruitcake/laravel-cors": "^2.0",
        "guzzlehttp/guzzle": "^7.2",
        "laravel/framework": "^8.12",
        "laravel/passport": "^10.1",
        "laravel/sanctum": "^2.9",
        "laravel/tinker": "^2.5",
        "symfony/psr-http-message-bridge": "^2.0"
    },
    "require-dev": {
        "facade/ignition": "^2.5",
        "fakerphp/faker": "^1.9.1",
        "laravel/sail": "^1.0.1",
        "mockery/mockery": "^1.4.2",
        "nunomaduro/collision": "^5.0",
        "phpunit/phpunit": "^9.3.3"
    },
    "config": {
        "optimize-autoloader": true,
        "preferred-install": "dist",
        "sort-packages": true
    },
    "extra": {
        "laravel": {
            "dont-discover": []
        }
    },
    "autoload": {
        "psr-4": {
            "App\\": "app/",
            "Database\\Factories\\": "database/factories/",
            "Database\\Seeders\\": "database/seeders/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "minimum-stability": "dev",
    "prefer-stable": true,
    "scripts": {
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover --ansi"
        ],
        "post-root-package-install": [
            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate --ansi"
        ]
    }
}

But when I tried to import/use Laravel/Sanctum/HasApiTokens, it says 'undefined type'. Image as below

Here's another screenshot. Doesn't have any sanctum directory after Laravel.