Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Lvx1YxA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c7a7fb6d-6c7a-4afc-be3a-4db0fec672a2",
      "cw-7469f244-b01e-4923-9434-dce13cc0626b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-61fcd266-3561-48b4-bb48-500333092cf1",
    "manifestId": "https://dam.iuav.it/iuav/containers/Lvx1YxA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7469f244-b01e-4923-9434-dce13cc0626b"
  }
}