Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vQndW6A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cbc47efc-863d-4993-92cb-b66160ab8664",
      "cw-008e32f1-d9d0-4d00-8c8d-d9f23891caf6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b14016fe-cd9a-4c64-b4ac-5955d2042b0b",
    "manifestId": "https://dam.iuav.it/iuav/containers/vQndW6A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-008e32f1-d9d0-4d00-8c8d-d9f23891caf6"
  }
}