/home/optimumoperation/moderncms.optimumoperations.top/core/app/Popup.php
<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Popup extends Model
{
    public function language() {
        return $this->belongsTo('App\Language');
    }
}
Path: home/optimumoperation/moderncms.optimumoperations.top/core/app