Github site cannot be reached

Describes the cause and action for error messages.

Error Message(English)：
site cannot be reached

Resolution

localhost - Site cannot be reached ・ Issue #12 ・ kentcdodds ... - GitHub
https://github.com/kentcdodds/es6-todomvc/issues/12

Fix This site can't be reached|ERR_CONNECTION_REFUSED in ...
https://www.youtube.com/watch?v=8P9mZNIf414

https://www.youtube.com/watch?v=8P9mZNIf414

How to fix This site can't be reached - YouTube
https://www.youtube.com/watch?v=5QX42y4Qya4

https://www.youtube.com/watch?v=5QX42y4Qya4

Fix ERR_ADDRESS_UNREACHABLE-This site can't be reached Error ...
https://www.youtube.com/watch?v=zuGcu-6w4L0

https://www.youtube.com/watch?v=zuGcu-6w4L0

100% Fixed The Site can't be reached | 9 Easy way - YouTube
https://www.youtube.com/watch?v=W1ka_T-6xpA

https://www.youtube.com/watch?v=W1ka_T-6xpA