Why doesn't it load .png images on the site?

Question

GitHub

The site on github
https://staroverovaleksey.github.io/
out of 18 available .png images only loads 3. Locally everything works correctly. I can't figure out what the problem is.

Answer 1

About an hour after the publication of the files on the github, the pictures began to load. Apparently, these are the features of hosting on the gith...