Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Jvaw5Ee/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-18a0d6af-9803-4271-860c-5561478b568c",
      "cw-c158f63c-c5a1-4405-a20d-d7118ebe29c9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-27cc85b9-bba4-4bfd-affc-e16cc5ddcae2",
    "manifestId": "https://dam.iuav.it/iuav/containers/Jvaw5Ee/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c158f63c-c5a1-4405-a20d-d7118ebe29c9"
  }
}