gpg failed to sign the data fatal: failed to write commit object [Git 2.10.0]

Question

I followed few articles over the pretty attributes on Git 2.10 release note. Going through which upgraded the git to 2.10.0 and made changes to global .gitconfig

Answer 1

The git trace was very revealing for my situation...

   GIT_TRACE=1 git commit -m "a commit message"

   13:45:39.940081 git.c:344               trace: built-in: git commit -m 'a commit message'
   13:45:39.977999 run-command.c:640       trace: run_command: gpg --status-fd=2 -bsau 'full name '
   error: gpg failed to sign the data
   fatal: failed to write commit object

I needed to generate an initial key per the format that git was checking against. It's best to copy the value passed to -bsau above in the logs as is and use below.

So it becomes,

   gpg --quick-generate-key "full name "

Then it worked.

Hope that helps.