To run web page locally, you need to have Symfony CLI installed locally. Instruction on how to install it can be found here: https://symfony.com/download.

composer install
symfony server:ca:install
symfony server:start -d

To use https://flow-php.wip you need to configure local proxy. Otherwise, you can use https://127.0.0.1:800X;

composer build

Before opening a pull request, please verify if the build is successful:

php -S localhost:9000 -t build

Open: https://localhost:9000