Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AVWqb2e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-49472078-5290-48f3-84ba-5fe513a1ffa7",
      "cw-70a376ce-eefb-4f37-bb17-0dff516ee844"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-793b36fa-50f4-4761-9575-46c34cd9d5e0",
    "manifestId": "https://dam.iuav.it/iuav/containers/AVWqb2e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-70a376ce-eefb-4f37-bb17-0dff516ee844"
  }
}