Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AVWBRde/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-18abc4df-553c-46a3-8a7f-69ec15b21f7f",
      "cw-16040698-44f1-445d-96e0-e50c362135ad"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a95f89e3-3d21-4984-a50b-903cea638373",
    "manifestId": "https://dam.iuav.it/iuav/containers/AVWBRde/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-16040698-44f1-445d-96e0-e50c362135ad"
  }
}