Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Akr7pxv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-20cf9ad8-efd0-4601-abc0-d9f1896728e2",
      "cw-4d96ce48-1e1b-4364-b9c9-0d825a051458"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-95dfdc26-f250-495f-877a-7aae5e5b3738",
    "manifestId": "https://dam.iuav.it/iuav/containers/Akr7pxv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4d96ce48-1e1b-4364-b9c9-0d825a051458"
  }
}