Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBj4ze/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-dea66e0a-a7c2-4f05-be06-97701c1f89a1",
      "cw-f066311b-4501-4775-8328-82ab0b8e3bdd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1001a51a-8bcf-4db2-95fb-ba7a3cf1ef56",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBj4ze/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f066311b-4501-4775-8328-82ab0b8e3bdd"
  }
}