Git error - gpg failed to sign data

Question

I just started using git and I install git and gpg via homebrew. For some reason, I get this error when i do git commit I looked at so many other stackoverflow

Answer 1

In my case, I had mixed gpg configuration and smimesign configuration given in the commit signing documentation here: https://help.github.com/en/github/authenticating-to-github/telling-git-about-your-signing-key

After working on it for hours, I found the best way to correct it was unset everything related to gpg, and reconfiguring gpg.

As mentioned in @Jason Thrasher's answer, find all the git config related to gpg using:

git config -l | grep gpg

Then unset everything golablly as well as locally using:

git config --global --unset 
git config --local --unset 

Then reconfigure following the official documentation given above. Hope this helps.