Don't works if model primaryKey is not id

[PrestaSafe]

I've a model, Customer

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Customer extends Model
{
    protected $table = 'customer';
    protected $primaryKey = 'id_customer';
}

and i've this error:

If i change to key (in the database) to id it's working !

I'm issing something ?

Thanks

[bobkosse]

@PrestaSafe You can easy fix this by adding public $sort_attribute = 'id_customer'; to your table component.