It says
Publishing build https://hub.flathub.org/api/v1/build/59416
the build has failed
Api call to https://hub.flathub.org/api/v1/build/59416/publish failed with status 400, details: {'current-state': 'failed', 'error-type': 'wrong-repo-state', 'expected-state': 'ready', 'message': 'Build failed: 1 out of 2 checks failed (flatpak-builder-lint)', 'status': 400}
It looks like some flatpak-builder-lint check has failed, but I don’t know what is the issue