Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABaXEv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-50a9363e-ccf1-435d-bead-6a24eefe2521",
      "cw-3bb655ed-e51d-4748-a68a-d3486ea3ea39"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e0f69696-8400-4659-a7ca-541c050b153c",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABaXEv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3bb655ed-e51d-4748-a68a-d3486ea3ea39"
  }
}