test_app/app/Models/StoreUser.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
//use Illuminate\Database\Eloquent\SoftDeletes;

class StoreUser extends Model
{
//    use SoftDeletes;
    protected $table='store_user';
    protected $fillable = ['user_id','user_mobile','store_id'];
}