Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/LvxzJ3e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bf483952-e137-4bf0-a97c-134c96bc7a95",
      "cw-fe16800d-57a6-48eb-a8d7-31f21fa89d0a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dd163cf2-a72b-43dd-9e06-d2e06bd74341",
    "manifestId": "https://dam.iuav.it/iuav/containers/LvxzJ3e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fe16800d-57a6-48eb-a8d7-31f21fa89d0a"
  }
}