erp/app/Http/Controllers/Controller.php

<?php

namespace App\Http\Controllers;

use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Routing\Controller as BaseController;

class Controller extends BaseController
{
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;

    protected $res = [
        'httpCode' => 200,
        'errorCode' => 0,
        'errorMessage' => '',
    ];

    protected function setValidatorFailResponse($errorMessage)
    {
        return $this->res = [
            'httpCode' => 400,
            'errorCode' => 400416,
            'errorMessage' => $errorMessage,
        ];
    }
}