Can't connect to github repository from server in cPanel

I connected my repository to my hosting server and it was working fine since years.
But yesterday I opened the CPanel > GIT Version Control , and I was not able to connect to my repository.
So I decided to check to connect to a new repository and I couldn’t connect to remote repository which is on github.
I added SSH key also in Account Settings and also Added Deploy keys on specific Repositories.

I need solution please.

When I ran
ssh -i ~/.ssh/pcs -T
I got
Hi Rashuoo7/pcssimplified! You’ve successfully authenticated, but GitHub does not provide shell access.

But I am still not connecting to the repository I was using.