Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/oA3X6qe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8e3ce5a3-34a5-453e-bb44-7c6e5e0b11f7",
      "cw-81123b16-2f32-43f9-96bf-58231e58c498"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-eedccec1-8ac9-43ec-9a1b-b9de1caa84c3",
    "manifestId": "https://dam.iuav.it/iuav/containers/oA3X6qe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-81123b16-2f32-43f9-96bf-58231e58c498"
  }
}