Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JvaEKRv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-26bcb505-8480-4ddb-81c5-9c579b90de02",
      "cw-9ae94508-ecf2-45a3-830d-8bf252597d2e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e75076e9-631d-403a-ad07-688e1aad0d52",
    "manifestId": "https://dam.iuav.it/iuav/containers/JvaEKRv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9ae94508-ecf2-45a3-830d-8bf252597d2e"
  }
}