Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AVpXdZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c25b9ad5-df91-4373-89a2-ea514b8a44a7",
      "cw-1e265ca5-e111-49f3-a7aa-e14fef97a0cb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-73face06-ceb9-4276-84f9-e0bc8f031c2b",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AVpXdZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1e265ca5-e111-49f3-a7aa-e14fef97a0cb"
  }
}