Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/voYbB6e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-dbffd1b9-3a24-481a-bd5b-275ac25c9dca",
      "cw-e29993b4-14e6-42c8-b66c-65465700bc1d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-77055de6-6c23-49c3-a377-5f01441df38c",
    "manifestId": "https://dam.iuav.it/iuav/containers/voYbB6e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e29993b4-14e6-42c8-b66c-65465700bc1d"
  }
}