我得到了错误array_merge期望参数2在laravel 8工厂？

use Illuminate\Database\Eloquent\Factories\Factory;

class MyModelFactory extends Factory
{
    protected $model = MyModel::class;

    public function definition()
    {
        return [
            'attribute1' => $this->faker->name,
            'attribute2' => $this->faker->address,
            // ...
        ];
    }
}