Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wArj4rA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c03dee7d-9211-45cc-92de-ffb59a5162be",
      "cw-1c780b45-f7b2-40e5-a17f-54194b3dd1c2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-da336d4f-40e6-4a91-870e-80d62c958f2c",
    "manifestId": "https://dam.iuav.it/iuav/containers/wArj4rA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1c780b45-f7b2-40e5-a17f-54194b3dd1c2"
  }
}