Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v788jXA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-43f6a98c-a9a4-46ee-9fde-21ed16e925a0",
      "cw-18777a98-08f6-429c-836a-3fa60fcd4e5b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cd5dd50c-fa5a-4627-b4c6-e6861977e4fc",
    "manifestId": "https://dam.iuav.it/iuav/containers/v788jXA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-18777a98-08f6-429c-836a-3fa60fcd4e5b"
  }
}