adding coauthors via nomad.yaml files does not work in certain Oases

When adding co-authors in a nomad.yaml file (example below) to an upload in this Oasis instance managed by @g-michaelgoette, it does not work. The same file works without a problem in the main NOMAD.

{
    "comment": "Data from a cool research project",
    "references": ["http://archivex.org/mypaper"],
    "coauthors": [
        "pbeblo",
        "pepe_marquez"
    ]
}