permission 在模型中配置了 $guard_name，但並未起效。求大佬指點。

• 模型程式碼

  <?php
  
  namespace App\Http\Models\Api\Server;
  
  use Auth;
  use Illuminate\Database\Eloquent\SoftDeletes;
  use Illuminate\Foundation\Auth\User as Authenticatable;
  use Spatie\Permission\Models\Permission;
  use Spatie\Permission\Traits\HasRoles;
  use Tymon\JWTAuth\Contracts\JWTSubject;
  
  class Servers extends Authenticatable implements JWTSubject
  {
      use HasRoles;
      protected $guard_name = 'server';
      public function __construct()
      {
          if (!cache()->has('hasPermission_server_manage_user')) {
              if (Permission::findOrCreate(0,'server_manage_user', '管理使用者')) {
                  cache()->set('hasPermission_server_manage_user', 1, 60 * 60 * 24);
              }
          }
      }
      public function getJWTIdentifier()
      {
          return $this->getKey();
      }

  -執行後資料庫中

• config/auth.php

  'defaults' => [
      'guard' => 'web',
      'passwords' => 'users',
  ],

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

  'user' => [
      'driver' => 'jwt',
      'provider' => 'users',
  ],
  'server' => [
      'driver' => 'jwt',
      'provider' => 'servers',
  ],

  ],

有大佬能指點下嗎？