How to solve Magento 2 composer installation error: Invalid credentials for 'https://repo.magento.com/packages.json'
If you are unable to install Magento 2 from composer due to this exception, check the solution here.
Magento 2 11
Magento is an ecommerce platform built on open source technology which provides online merchants with a flexible shopping cart system, as well as control over the look, content and functionality of their online store.
