Failed: error occurred while fetching repo

Hello

Several days ago, my pages just can’t pull the code from github (private repo), the build log says:

08:58:26.733 Cloning repository…
08:58:27.407 remote: Repository not found.
08:58:27.408 fatal: repository ‘some_replo_on_github’ not found
08:58:27.408
08:58:28.283 Failed: error occurred while fetching repo

This page has been existing for long days, and it worked fine in the past days. But recently I can not build the development anymore.

Can you help? thanks.