handle_kiwi_build calls kiwiBuild with arches=[] by default: https://pagure.io/koji/blob/master/f/plugins/cli/kiwi.py#_60
in kiwiBuild: https://pagure.io/koji/blob/master/f/plugins/hub/kiwi.py#_27
parse_arches expects a str, resulting in: [ERROR] koji: Fault: : expected string or bytes-like object">
PR 3428
Metadata Update from @jcupova: - Custom field Size adjusted to None
Metadata Update from @jcupova: - Issue set to the milestone: 1.29.1 - Issue tagged with: testing-ready
Metadata Update from @jobrauer: - Issue tagged with: testing-done
Commit 7fed6307 fixes this issue
Commit c141eb0f fixes this issue
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/3427
Please continue any further discussion there.