Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AEP6mnv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c31258cd-4ac9-4a02-8bb4-3a3c66ba889e",
      "cw-33b8aadc-0345-4d8c-94c0-760061737a14"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4a6d1f17-1085-48a1-b9e5-2e1c3fe87cad",
    "manifestId": "https://dam.iuav.it/iuav/containers/AEP6mnv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-33b8aadc-0345-4d8c-94c0-760061737a14"
  }
}