Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AwqM9BZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-000b49ba-24a7-46a8-9a76-59f954ddfe3d",
      "cw-5d6e5f4b-a191-4a7c-84ec-ac52e45ee1f7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6b074af3-8056-41a9-b60f-f7bf2697f97e",
    "manifestId": "https://dam.iuav.it/iuav/containers/AwqM9BZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5d6e5f4b-a191-4a7c-84ec-ac52e45ee1f7"
  }
}