Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50a9rA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b975e5da-8b05-42af-822e-a205b46d42e3",
      "cw-21d1e482-1729-442a-add2-6ee98783f425"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fc6eaf7c-5d3c-45d7-9f1d-6744c7cb52ec",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50a9rA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-21d1e482-1729-442a-add2-6ee98783f425"
  }
}