Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Am6lW9e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-80ca5ec3-6619-4d49-868a-9bf0b12ed1cb",
      "cw-7a562f6f-c927-404b-95ea-f8a5ea447c4a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-84d02c61-3aaf-4b1b-be65-d2239359709c",
    "manifestId": "https://dam.iuav.it/iuav/containers/Am6lW9e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7a562f6f-c927-404b-95ea-f8a5ea447c4a"
  }
}