Undefined Variable 500 Error

PHP Code:

<?php

namespace App\Controllers;

class Home extends BaseController
{
    public function index(): string
    {
        echo $dd;
    }
} 


The above code generates 500 internal server errors in a real environment.


In native php this code continues normally.
In Ci3 it also logs the undefined error to the logs folder but the script continues to run.

Is it possible to make this situation work like ci3 in ci4?