You have installed eZ Launchpad, and you can execute the binary ez from your home folder or other paths, however when you execute it from a project folder you cloned with git (with its .platform.app.yaml file) ez returns to prompt without any error message.

The exit code is 255, but even if you strace the process you don’t find the exact problem.

Inside your project you run ez without any argument in a clean install of Ubuntu 24.04 LTS with PHP 8.3, or with PHP 8.4, without xDebug, without opcache, without memory limit… nothing works with no visible error message in the logs or in the error output. However if you run it outside the project folder, it works, and it displays the typical help messages.

I reproduced this behavior on several Ubuntu computers. The fix I found is to execute ez with PHP 8.1

You can install PHP8.1 from ondrej repository, then you can update alternates to execute PHP 8.1 by default in your system, or you create the project by invoking ez with PHP 8.1 explicitly with:

php8.1 ~/ez create

This will kickstart the creation of your ez project based on Docker containers.