我试图在我的laravel项目中使用枚举，但我面临这个问题。它在我的模型中找不到类IssueStatus，我想在我的SQL中使用它。请问在Laravel中如何使用？

<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use App\Enums\IssueStatus;
class Issue extends Model
{
    use HasFactory;
    protected $table = 'issues';
    protected $fillable = [
        'shop_id', 
        'title', 
        'description',
        'status'
    ];
    /**
     * Get all issue without "resolved".
     *
     * @return \Illuminate\Database\Eloquent\Collection
     */
    public static function scopeNotResolved()
    {
        return self::join('shop', 'issues.shop_id', '=', 'shop.id')
            ->select('issues.*', 'shop.shop_name')
            ->where('issues.status', '!=', IssueStatus::RESOLVED)
            ->orderBy('issues.status', 'asc')->get();
    }
}

我的enum类

<?
namespace App\Enums;
/**
 * Enum class representing the issue status
 *
 * @package App\Enums
 */
enum IssueStatus: int
{
    case NEW = 0;
    case IN_PROGRESS = 1;
    case ON_HOLD = 2;
    case RESOLVED = 3;        
}

还有一条来自phpstan的消息

Line   Models/Issue.php
 ------ ------------------------------------------------------------------------
  30     Access to constant RESOLVED on an unknown class App\Enums\IssueStatus.
         💡 Learn more at https://phpstan.org/user-guide/discovering-symbols
 ------ ------------------------------------------------------------------------