Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjlDGlA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d18661a0-ef7b-4ec3-bd89-cfe4f1f78b12",
      "cw-61c148be-e935-42d2-8b44-964b0e14a9a6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ed6db7c1-5026-4c58-a641-bcb6e6ec3735",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjlDGlA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-61c148be-e935-42d2-8b44-964b0e14a9a6"
  }
}