weixin/app/Repositories/Models/Exam/PaperModel.php

<?php

namespace App\Repositories\Models\Exam;

use App\Repositories\Models\Model;

class PaperModel extends Model
{
    /**
     * @var string
     */
    protected $table = 'exam_paper_model';

    protected $guarded = [];

    public $incrementing = true;

    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */
    protected $hidden = [];
}