invoiceninja/app/Exceptions/SystemError.php

<?php

namespace App\Exceptions;

use Exception;

class SystemError extends Exception
{
    public function report()
    {
        // ..
    }

    public function render($request)
    {
        return view('errors.guest', [
            'message' => $this->getMessage(),
            'code' => $this->getCode(),
        ]);
    }
}