Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/nv7kqRv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c1692e29-42bc-4420-8408-ad14e6b48ca2",
      "cw-99c43ef2-ba10-4cf8-a567-eb67254e36e7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-017887c8-04e0-4dc4-a427-28e53f5ea6ba",
    "manifestId": "https://dam.iuav.it/iuav/containers/nv7kqRv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-99c43ef2-ba10-4cf8-a567-eb67254e36e7"
  }
}