Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9kLGkv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-28fc3b9f-aacd-4196-bedc-e8da5eebb14f",
      "cw-7406b6b6-3d64-4921-a72f-594216f6fb89"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c0f7f19b-1e89-4a43-8e3b-3fcc7768d1dd",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9kLGkv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7406b6b6-3d64-4921-a72f-594216f6fb89"
  }
}