Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vLEM9yA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d539d0da-d2aa-4422-a597-41247f9a21c3",
      "cw-a25c3f5f-fbe2-4c61-a1dc-2f27bce97461"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7e47abcf-e72c-4b55-a105-55b46e8238b8",
    "manifestId": "https://dam.iuav.it/iuav/containers/vLEM9yA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a25c3f5f-fbe2-4c61-a1dc-2f27bce97461"
  }
}