exchange/app/Booking.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Booking extends Model
{
    // protected $guarded = [];
    protected $fillable = ['account_name', 'account_num', 'bank_name', 'bank_branch', 'company_name', 'company_address', 'bank_address', 'swift_code', 'cnap' ];
}