Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvlGqkZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c1cd5c82-77d2-4443-958a-2126baa1f98c",
      "cw-824d0a89-000e-4915-b61e-d184dd4ae423"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1fe75d5c-6435-4e5f-a31b-82269d2d8ec3",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvlGqkZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-824d0a89-000e-4915-b61e-d184dd4ae423"
  }
}