Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vdxX3yv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b13eb126-983b-40e3-91d7-40d911054a45",
      "cw-65beb3f5-9c08-4220-96fa-07e2a65216f9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e4bb7aff-d52b-4897-936b-b43203b66beb",
    "manifestId": "https://dam.iuav.it/iuav/containers/vdxX3yv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-65beb3f5-9c08-4220-96fa-07e2a65216f9"
  }
}