Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABmqEv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a7c6e081-a662-4e96-85d2-941881da2928",
      "cw-413d52de-8241-4487-a2d9-9e8de97165a8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e8a5f467-8f34-4cbf-8b8b-8968c09afd9e",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABmqEv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-413d52de-8241-4487-a2d9-9e8de97165a8"
  }
}