Class "Redis" Not Found laravel 8, using phpredis

I am using laravel 8, and it is throwing error, when ever I tried to run:

php artsian config:clear

On laravel, this is my config value (because I am trying to use phpredis):

'client' => env('REDIS_CLIENT', 'phpredis'),

I could use redis-cli and ping at the moment. Not, just that I could hit the following endpoint successfully.

    public function testRedis()
    {
        Redis::set('ping','pong');
        $ping = Redis::get('ping');
        dd($ping);
    }

It prints out pong successfully.

but I am receiving class Redis not found. Whenever I tried to run, php artisan config:clear

Full error looks like this:

  Class "Redis" not found

  at vendor/laravel/framework/src/Illuminate/Redis/Connectors/PhpRedisConnector.php:75
     71▕      * @throws LogicException
     72▕      */
     73▕     protected function createClient(array $config)
     74▕     {
  ➜  75▕         return tap(new Redis, function ($client) use ($config) {
     76▕             if ($client instanceof RedisFacade) {
     77▕                 throw new LogicException(
     78▕                     extension_loaded('redis')
     79▕                         ? 'Please remove or rename the Redis facade alias in your "app" configuration file in order to avoid collision with the PHP Redis extension.'

      +10 vendor frames 
  11  app/Models/Setting.php:34
      IlluminateSupportFacadesFacade::__callStatic()

  12  app/Providers/AppServiceProvider.php:37
      AppModelsSetting::getCachedValue()

and my AppModelsSetting looks like:

<?php

namespace AppModels;

use IlluminateDatabaseEloquentFactoriesHasFactory;
use IlluminateDatabaseEloquentModel;
use IlluminateSupportFacadesCache;

class Setting extends Model
{
    use HasFactory;
    
    protected $table = 'settings';
    protected $guarded = ['id'];
    protected $dates = ['created_at','updated_at'];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'created_at' => 'datetime:Y-m-d', // Change your format
        'updated_at' => 'datetime:Y-m-d',
    ];

    const STRIPE_ENVIRONMENT = ['test', 'live'];

    public static function getCachedValue(){
        return Cache::rememberForever('settings', function () {
            return Setting::pluck('key_value', 'key_name');
        });
    }

    public static function updateCachedSettingsData(){
        Cache::forget('settings');
        self::getCachedValue();
    }
}

What, I might be doing wrong here.
#PS: This line on my config/app is commented.

// 'Redis' => IlluminateSupportFacadesRedis::class,