Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vPkBWXZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b5e1c8ef-9b2a-4a1c-ae31-1dad27427bbf",
      "cw-d0fc77b2-198e-4cdd-9084-5607ad4af7e8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-469238da-d426-4a34-b38b-4824e70fd6a2",
    "manifestId": "https://dam.iuav.it/iuav/containers/vPkBWXZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d0fc77b2-198e-4cdd-9084-5607ad4af7e8"
  }
}