Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Bey5RJe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-83deb437-8f14-4a8c-8fc0-c43340139999",
      "cw-779739fa-beef-4255-8811-256556904157"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b60b83d3-4d2f-4b8d-a055-6a0a815666bf",
    "manifestId": "https://dam.iuav.it/iuav/containers/Bey5RJe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-779739fa-beef-4255-8811-256556904157"
  }
}