Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/zegL8zZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b2daaefd-00fa-4263-b5c8-01333a28f137",
      "cw-4d6457da-2e25-4bd2-9d8c-6b642e539213"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8ce8a8a5-61ab-4e46-9635-558a52fcb633",
    "manifestId": "https://dam.iuav.it/iuav/containers/zegL8zZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4d6457da-2e25-4bd2-9d8c-6b642e539213"
  }
}