Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vLEWy5A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-13c41850-7a28-4ce6-99f0-d1b58172c9ac",
      "cw-a13e9e0a-6f9f-44dc-9cbe-0dab075963c8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-628e0648-bce5-423a-935d-493d7c2b0a0f",
    "manifestId": "https://dam.iuav.it/iuav/containers/vLEWy5A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a13e9e0a-6f9f-44dc-9cbe-0dab075963c8"
  }
}