Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvlaDDA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6419b159-529c-45e2-82ef-3336897ff625",
      "cw-f60fcacf-ee15-4833-933c-86cd9e1083d6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b6e4b448-ddde-480d-bbab-27c221b74368",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvlaDDA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f60fcacf-ee15-4833-933c-86cd9e1083d6"
  }
}