Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AMjY3De/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-57cabd40-3e13-419d-beac-59e067661448",
      "cw-80d8a58c-4d5a-4c81-a6e5-595c746b0dfd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a7b34cfe-9493-4409-9714-dade62199b91",
    "manifestId": "https://dam.iuav.it/iuav/containers/AMjY3De/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-80d8a58c-4d5a-4c81-a6e5-595c746b0dfd"
  }
}