Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e0Boygv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-efd7c17c-30ed-4192-9936-201abef3a4dc",
      "cw-b6c7720f-9fb5-402d-bce4-d68aa5e0e5fb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8e2ec2bc-7213-4776-9678-86a5b085c3f8",
    "manifestId": "https://dam.iuav.it/iuav/containers/e0Boygv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b6c7720f-9fb5-402d-bce4-d68aa5e0e5fb"
  }
}