Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Akrbl7v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3e5002d5-c60b-4435-b48d-39a47a36b07b",
      "cw-8c233303-2898-45e0-88bd-070d95a1edbe"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8c3a2789-76b9-42d9-95a5-b7a44a4cf001",
    "manifestId": "https://dam.iuav.it/iuav/containers/Akrbl7v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8c233303-2898-45e0-88bd-070d95a1edbe"
  }
}