Não consigo instalar o Laravel!!!

Thuplek
(usa KUbuntu)

Enviado em 19/09/2018 - 15:01h

coloco o comando
~$ composer global require "laravel/installer"

resultado
[Composer\Downloader\TransportException]
Invalid credentials for 'http://repo.packagist.org/p/provider-2014%244c9d6d2733c1aaebfeed4e06fd84a8547750c5edb7e07c0cd34373a5b087d157.json', aborting.