Class 'CssMin' not found

[scones]

I get the following error, when using the CssMinFilter class.

The reason is obvious: The class was used, but never declared.

Type: Error
Message: Class 'CssMin' not found
File: /var/www/dev/zelos/vendor/kriswallsmith/assetic/src/Assetic/Filter/CssMinFilter.php
Line: 70

[marvinborner]

Install the corresponding class from composer
composer require natxet/CssMin
this worked for me.

[scones]

my point is not that i can install it. i am aware of it.
my point is: there should be a suggest or dependency in the assetic composer.json, as it is obviously needed.

[LukeTowers]

Assetic lives on at https://github.com/assetic-php/assetic & under assetic/framework on Packagist. We've just released the 2.0 release that addresses a number of existing issues and dependency updates, see https://github.com/assetic-php/assetic/releases/tag/v2.0.0 for more information! Please try it out and let us know if you have any issues!