Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vGEDkae/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a7d7aa7b-5ccb-4261-9472-8251e4558deb",
      "cw-817519a2-6d02-4865-9e80-300aac894473"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3acd02ca-e25f-4946-b3a6-ac9ea1e9cde7",
    "manifestId": "https://dam.iuav.it/iuav/containers/vGEDkae/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-817519a2-6d02-4865-9e80-300aac894473"
  }
}