Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e5NG5PZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1c5011ee-9f7d-4bc3-b006-cb5e544eccdc",
      "cw-b152de80-1b94-478e-a296-ac9179407626"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-382cd303-682f-49df-9c48-af2959e022a7",
    "manifestId": "https://dam.iuav.it/iuav/containers/e5NG5PZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b152de80-1b94-478e-a296-ac9179407626"
  }
}