Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AVWX4ye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4aca4c99-f1f0-4bce-9997-5891e28dbe51",
      "cw-14d10142-f024-4035-a466-20e7e8789760"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-90c034a4-a6b9-4754-ba56-d300baa8c482",
    "manifestId": "https://dam.iuav.it/iuav/containers/AVWX4ye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-14d10142-f024-4035-a466-20e7e8789760"
  }
}