Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0RzOZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fdef551b-cd52-4ff6-80ac-d958fbfab30b",
      "cw-1e1cb725-fa7b-430b-8310-2dc88700efa1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-491bbbad-5af0-4dcf-9f02-b3ef410205fc",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0RzOZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1e1cb725-fa7b-430b-8310-2dc88700efa1"
  }
}