Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/EZn97ye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9deba1b3-9431-4100-a49e-29cabb19b72d",
      "cw-2cc3e985-8c84-46b4-8d21-155df4b51ab5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ad9b680f-9b03-4395-9d11-9de64dc66c9f",
    "manifestId": "https://dam.iuav.it/iuav/containers/EZn97ye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2cc3e985-8c84-46b4-8d21-155df4b51ab5"
  }
}