Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0KmMZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-97335959-ca6b-4d23-b67a-0014841818af",
      "cw-0c5091b1-cbc2-4fa2-b9b9-79269aa8cee0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ced214dd-e55e-4e0c-9e83-75eb0351e95a",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0KmMZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0c5091b1-cbc2-4fa2-b9b9-79269aa8cee0"
  }
}