Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AKK51DA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-735ba79b-e641-4739-b820-95edf6beaedc",
      "cw-6aa66dc2-ea5c-4f5e-8d9a-028c4b865000"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3046768e-0573-4752-b3c6-3857588a594b",
    "manifestId": "https://dam.iuav.it/iuav/containers/AKK51DA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6aa66dc2-ea5c-4f5e-8d9a-028c4b865000"
  }
}