Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2AKm3EZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d1d5c77e-a74a-47be-9ca8-876c42f6be62",
      "cw-e1f8b923-cd95-4684-9ef6-fe6acab30517"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-51bec2aa-3478-43bd-ad83-1df258a7af21",
    "manifestId": "https://dam.iuav.it/iuav/containers/2AKm3EZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e1f8b923-cd95-4684-9ef6-fe6acab30517"
  }
}