Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vQnD3YA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b6caa01f-de96-4f8f-9720-7b0e2dab5fad",
      "cw-59ff62ff-93e8-4f26-8913-6b2058b11a76"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3a1f8a14-b8a7-454d-8412-208926901e83",
    "manifestId": "https://dam.iuav.it/iuav/containers/vQnD3YA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-59ff62ff-93e8-4f26-8913-6b2058b11a76"
  }
}