Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ArPjzDZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-284b6ce3-3e51-4557-bc65-03c188b9c7d2",
      "cw-27a43888-59f6-4ad6-8f00-e1305bd88a20"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-74f4e624-5c34-4377-9fa8-58851111a4a6",
    "manifestId": "https://dam.iuav.it/iuav/containers/ArPjzDZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-27a43888-59f6-4ad6-8f00-e1305bd88a20"
  }
}