Cannot mirror from github public repository

Hello all,
I was connecting a github repository to my gitlab repository.
It has been updating ok 2 days ago before my teammate changed the configuration.
I tried to reconfigure again, but those seem not succeed.

I’m try to mirror from the repo:
And whenever I paste the url to the configuration field, it automatically changed to

I had also added the ssh key to my personal profile on Github.

is there any wrong?

Anyone in the same issue?