Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/be9qqQe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-73482664-67e5-4c42-8b63-f0daf7d52067",
      "cw-5e9496c6-cd94-4bb4-905c-9f376ef5e08e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ef8ce7a9-23d8-47cc-83d7-4e2a3eaa947a",
    "manifestId": "https://dam.iuav.it/iuav/containers/be9qqQe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5e9496c6-cd94-4bb4-905c-9f376ef5e08e"
  }
}