JReleaser wants community and solution key to sign artifacts. Considering that signing are going to be done by a GitHub action, you have to export these keys as GitHub strategies. I recommend triggering these actions manually for the very first Variation you release simply to check if everything is okay. https://jav-new-today28372.bloggactif.com/37683973/5-tips-about-jav-upload-today-you-can-use-today