Bug when posting with archiveUrl?

[lautarodragan]

POST

{
  "name": "ASD",
  "datePublished": "2019-04-25T08:52:37.964Z",
  "dateCreated": "2019-04-25T08:52:37.964Z",
  "author": "Lautaro",
  "tags": "zzz",
  "archiveUrl": "link"
}

GET

[
    {
        "about": [
            ""
        ],
        "hash": "",
        "name": "ASD",
        "datePublished": "2019-04-25T08:52:37.964Z",
        "dateCreated": "2019-04-25T08:52:37.964Z",
        "author": "Lautaro",
        "tags": "zzz",
        "archiveUrl": "link"
    }
]

Empty about? archiveUrl present in generated work?