Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDWLxaZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a9f46a36-2060-4a3c-a864-0aec701fa97e",
      "cw-6220a01a-7eba-4ae2-97ac-fabe23d5c00c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cbbbc482-ba64-44b9-adc2-8d1c6995116a",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDWLxaZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6220a01a-7eba-4ae2-97ac-fabe23d5c00c"
  }
}