I've re-installed the git bash. And when I tried to clone from one of my private repository, I was told that
remote: Repository not found.
fatal: repository 'https://github.com/<MY REPO ADDRESS>/' not found
I've checked that my username and email were all correct using the command
git config user.name
git config user.email
Why couldn't git find the repository? Is it because I forgot to configure something else?
The user.name and user.email have nothing to do with https authentication.
The former is for commits, the latter uses the GitHub username and password.
Since I don't see a debugging.git repo in your repo page, it could be a private repo (in which case double-check the username and password you should have to enter when cloning it).
Or it does not exist (in which case, create it on GitHub first)