Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0MkzZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-19c69d87-9bea-4a13-aaa4-d670a8711b03",
      "cw-579f646a-bcdb-485d-859c-ce6da4a51008"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-42a92eb7-6e09-48d4-8246-5d7cd991c506",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0MkzZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-579f646a-bcdb-485d-859c-ce6da4a51008"
  }
}