Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vRdWNNe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-782d9bb0-9af4-4e2e-8e95-271fad6f6eb6",
      "cw-7fb6602a-7188-44e8-851e-b99ef060c27c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c174ae26-1c8b-4b23-9cc2-921b897174cd",
    "manifestId": "https://dam.iuav.it/iuav/containers/vRdWNNe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7fb6602a-7188-44e8-851e-b99ef060c27c"
  }
}