This application is about a world boss timer from the game Guild Wars 2. It doesn't use any of Arena.net Api yet because it has it's own database. It is written in Codeigniter 4 so all you need to do is to open a terminal, navigate to the "twtaya2" folder and type "php spark serve". Don't forget to import the database before that
And make sure your PHP and Codeigniter settings are properly configured.