The ssh-private-key argument is empty. Maybe the secret has not been configured, or you are using a wrong secret name in your workflow file.

Process completed with exit code 128.

The following actions uses node12 which is deprecated and will be forced to run on node16: webfactory/[email protected], actions/upload-artifact@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/