The two images in the footer cannot be loaded

[Dup4]

The links to the two image are:

• https://assets-cdn.github.com/images/modules/logos_page/GitHub-Logo.png
• https://www.gstatic.com/devrel-devsite/prod/v0cb51633d618abe46a66cb213829eebf08ffc674824d203cafddde748d2d407e/b1fb9a8564/images/tensorflow/lockup.png

And the return result of both links is 404.

So it shouldn't be because of my network that it can't be loaded.