Setting baseURL in Registrar not working

If it's never invoked how did you get the fatal error that is being thrown? The error is saying that you defined your baseURL as '/' in Config/App.php. Which is why the application fails. Your namespace is also wrong in your registrar, it's not namespace Config; it should be namespace App/Config;, which is perhaps another reason it isn't working.

EDIT:
Make the baseURL line in your Config/App.php the following:

PHP Code:

public string $baseURL = 'http://192.168.0.1:81/'; 


And then make your Registrar

PHP Code:

<?php

namespace App\Config;

class Registrar
{
    public static function App(): array
    {
        if(ENVIRONMENT == 'staging')
                return ['baseURL' => 'http://mydomain.com/'];
        return [];
    }
} 


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