I have an old CakePHP app running on 2.4.7. We need to upgrade this application to work with PHP 7.4. So I'm guessing I need to upgrade CakePHP to a newer version?
It's been a couple of years since I worked with Cake. I remember that version 3 was drastically different from version 2. In looking at ways to upgrade the application, I came across this [CakePHP upgrade tool](https://github.com/cakephp/upgrade/tree/3.x). I tried running it, but it ended up deleting all of my controllers. I'm not sure if that was supposed to happen or not. Luckily I could revert the changes.
So, what's the best way to upgrade this app? I'm almost thinking I need to just create a brand new CakePHP app with the latest version and rewrite the old application to work on the newer version, but I'd like to avoid that if possible.