Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Be53wXv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f717b8be-2ac7-4904-823b-25a684ca5d2a",
      "cw-c19681ab-ae14-4b75-8ab1-4dc6b2a63f4d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9680415e-3f3e-4f31-af51-fdcfa6f0917f",
    "manifestId": "https://dam.iuav.it/iuav/containers/Be53wXv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c19681ab-ae14-4b75-8ab1-4dc6b2a63f4d"
  }
}