You have installed GPG, then tried to commit and suddenly you see this error message after it:
error: gpg failed to sign the data
fatal: failed to write commit object
Debug
Enumerating objects: 3, done.
Counting objects: 100% (3/3), done.
Delta compression using up to 4 threads
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 681 bytes | 681.00 KiB/s, done.
Total 3 (delta 0), reused 0 (delta 0)
remote: error: GH007: Your push would publish a private email address.
remote: You can make your email public or disable this protection by visiting:
remote: http://github.com/settings/emails