Composer swears at the installation?

Question

Composer

I downloaded the project from github, I do composer install, it gives out:
I checked out the whole google, I didn’t find anything and update and global tried composer require

Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Nothing to install or update
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover
Discovered Package: fideloper/proxy
Discovered Package: laravel/tinker
Discovered Package: nunomaduro/collision
Package manifest generated successfully.