Invalid credentials for https://repo.magento.com

Sometimes, when trying to install a Magento 2 module via Composer you get the error: Invalid credentials for 'https://repo.magento.com/packages.json', aborting.

Read more: .. 

Frontend Layout editing

Magento 2 frontend development can be really frustrating some times.

In order to ensure you can view the modifications of layout files folow the next steps:

Read more: ..