Theme: An Internal Server Error Occurred

Need Help
1

I am trying to create a new theme on cake 3.6., called “Twit”
I have already created all the directory tree:

/plugins/Twit/src/Template/… (Layout, Pages, etc…)

The Default theme is up and running w/o any problem, but whenever i try to call the theme “Twit”, by using on AppController.php:

public function beforeRender(\Cake\Event\Event $event) {

  $this->viewBuilder()->setTheme('Twit');

}

it returns:

An Internal Server Error Occurred

Any clues?

2

Switch on debug and check your error log

3

same error;
debug true;
someone fixed?
Thanks;
For me, this error occurred after I updated a project from 3.2 for 3.8;
Someone help us. please!

4

Have you followed the release notes for all the upgrades between 3.2 and 3.8? The names and locations of some functions have changed.

5

The same for me starting from a fresh 3.8 installation.