Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AEPRPGv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f68883d5-ba18-4ee3-85ab-5a4b034f921a",
      "cw-21183358-bdea-429d-a524-c8f997f3eb63"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-960b8929-c426-4139-9356-c91a3daa49bc",
    "manifestId": "https://dam.iuav.it/iuav/containers/AEPRPGv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-21183358-bdea-429d-a524-c8f997f3eb63"
  }
}