Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0jEyZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ca16abef-3b6b-4c2f-a8d8-80ee47b35d19",
      "cw-01bf2aa2-11dc-4441-9936-c1cea5e8be07"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-796b5a9f-feb0-4a92-a0d5-3e507c862b38",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0jEyZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-01bf2aa2-11dc-4441-9936-c1cea5e8be07"
  }
}