Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvl9wNA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6c523c08-23e3-4202-8652-8230c2de0590",
      "cw-3623f4b9-2a50-46b7-a56d-fd2d72ab58b2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6926eb79-8837-46e1-8866-94712aa844c1",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvl9wNA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3623f4b9-2a50-46b7-a56d-fd2d72ab58b2"
  }
}