Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/kv4bVWe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0b448fa7-15e1-45d4-af2d-9ec1941323be",
      "cw-923849dc-f9c6-47a8-ba01-8c202e9b3668"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e9cfecad-a469-4bac-b468-c82021bb84d4",
    "manifestId": "https://dam.iuav.it/iuav/containers/kv4bVWe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-923849dc-f9c6-47a8-ba01-8c202e9b3668"
  }
}