Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Jv6GNjA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5ca9d589-7cad-4fc5-ac7c-4049959fb1c8",
      "cw-9a8bf82d-69a0-4c7d-82b5-4cb80571f45e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1b60251e-3568-442c-be76-fe08edc67b88",
    "manifestId": "https://dam.iuav.it/iuav/containers/Jv6GNjA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9a8bf82d-69a0-4c7d-82b5-4cb80571f45e"
  }
}