Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/xZjydGe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9e7b7809-d51a-450e-a350-de7805a74db1",
      "cw-d412a9d8-8e81-4d82-a749-f8d680cbaad8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d3cb18db-df84-4eef-8fa0-9cb481bb5436",
    "manifestId": "https://dam.iuav.it/iuav/containers/xZjydGe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d412a9d8-8e81-4d82-a749-f8d680cbaad8"
  }
}