Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50lpMA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c7b35a73-a735-45d2-8650-d9338cdbe265",
      "cw-a25921f8-36fa-4553-9a2b-8e9a380fb675"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3ff18b9b-c332-4239-bbb4-9e279e94cd5c",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50lpMA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a25921f8-36fa-4553-9a2b-8e9a380fb675"
  }
}