Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AJK88de/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-aad59dc7-ad9e-4c0c-8904-88ce0a6d0c80",
      "cw-0ea0df9d-14b7-4312-bd00-ac4dca236e05"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-457e9203-56ff-4fd1-9d53-38019813cff0",
    "manifestId": "https://dam.iuav.it/iuav/containers/AJK88de/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0ea0df9d-14b7-4312-bd00-ac4dca236e05"
  }
}