Trying to deploy new version of my software

I have an artifact here (geophile), which I need to update, for the first time in several years. I am running mvn deploy, and running into this error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-gpg-plugin:1.5:sign 
(sign-artifacts) on project geophile: Exit code: 2 -> [Help 1]

I suspect that there is something wrong with my GPG setup, as I am working on a different machine from the one I used a few years ago, and I have new GPG keys on my new computer. Can someone point me in the right direction to complete this deployment?

It sounds like this is a question regarding deployment? If so, try posting it here:!forum/ossrh-users