Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v68GO1e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a4f8d8c9-5918-452c-93af-d5e58d115286",
      "cw-0fa96e53-bced-42ef-8b96-cf0b3057b972"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2eb2b3a9-934b-4136-bde8-3f828f718acf",
    "manifestId": "https://dam.iuav.it/iuav/containers/v68GO1e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0fa96e53-bced-42ef-8b96-cf0b3057b972"
  }
}