If you install Aimeos without using composer, there's no check if your environment provides everything Aimeos needs. Depending on your hosting environment, you may get this error:
Class "NumberFormatter" not found
In that case, one required PHP extension named
php-intl isn't installed. How to install the PHP extension depends on your environment. For Ubuntu, you can use:
sudo apt-get install php-intl
Afterwards, you can check if the extension is installed using:
intl extension must now be part of the list of PHP extensions displayed.
Some hoster use different PHP setups for CLI and web, so
php -m can report that the
intl extension is available but in your browser PHP still complains that the extension is missing!