Hello Vladimir! To install Composer correctly on UniServerZ, make sure you follow these steps:
Download Composer: Ensure you have the latest version of Composer downloaded to your UniServerZ/bin directory.
Set Environment Variables: Add the path to your Composer executable in the system environment variables so it can be accessed globally.
Run Composer: Open the command line and navigate to your Drupal project directory, then run composer create-project drupal/recommended-project my_site_name_dir to start the installation.
If you encounter any issues, feel free to ask for help!