Can't install

[Entretoize]

OK, so I'm trying to install using composer but I get a

Using version ^2.1 for da-mitchell/steam-api
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - The requested package da-mitchell/steam-api No version set (parsed as 1.0.0) is satisfiable by da-mitchell/steam-api[No version set (parsed as 1.0.0)] but these conflict with your requirements or minimum-stability.


Installation failed, reverting ./composer.json to its original content.

Do you have a full zip available ?