Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaXpPRZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c8b53ac1-6d99-4ec7-ad40-fc8750a64d5d",
      "cw-7038ca58-aab6-404d-8448-3712397542b2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-724c68e1-de56-417f-bf88-76dbb9c24d15",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaXpPRZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7038ca58-aab6-404d-8448-3712397542b2"
  }
}