Config/Services getSharedInstance returns an empty array

// in the service /root/App/Libraries/Language.php I have

PHP Code:

namespace App \ Libraries;

use \ CodeIgniter \ Language \ Language as CI_Language;
use App \ Models \ Languages;

    private $DBlanguage;

class Language extends CI_Language
{
    public function get (): array
    {
        return (array) $this->DBlanguage;
    }
} 


It seems $this->DBlanguage is an empty array.

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