Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaX4MEZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bfca6498-4b16-4c70-9978-e5081329d176",
      "cw-64851a08-c505-43ef-b999-442ce1db87f6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1525b202-3166-4e98-88a1-562cc0f00805",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaX4MEZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-64851a08-c505-43ef-b999-442ce1db87f6"
  }
}