Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78jL8A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-06f12172-1598-4f1b-8c70-6801cbd2fd5e",
      "cw-82521f5a-03c6-4310-ab41-4cfb63e9a9cd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-24e3e2ea-3808-4cb2-a2b9-d404cbcff573",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78jL8A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-82521f5a-03c6-4310-ab41-4cfb63e9a9cd"
  }
}