Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AKKMaNA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d7c3ff8b-7f69-4ac4-a85b-dc75bcf3b557",
      "cw-bee379cd-0445-42b0-9beb-4b6e46c2fcaf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2f8ef2b5-0d6a-4174-a8a8-b2d2ba40546c",
    "manifestId": "https://dam.iuav.it/iuav/containers/AKKMaNA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bee379cd-0445-42b0-9beb-4b6e46c2fcaf"
  }
}