Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDWkRnZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cba9a4da-2457-4977-933d-534d19a8d82c",
      "cw-53904677-333d-4c1e-b8eb-1f50357a1e8e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d5270e6a-55b9-4c0d-a281-c0d38bd16fee",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDWkRnZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-53904677-333d-4c1e-b8eb-1f50357a1e8e"
  }
}