Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/be9yKme/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-23a55f3e-bca4-4cc8-a7ae-b71c3f4b73b9",
      "cw-0e92625a-e239-45ec-88f9-c951f57cb2d5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c53d6984-1b32-4753-a640-4b013c3ed6a3",
    "manifestId": "https://dam.iuav.it/iuav/containers/be9yKme/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0e92625a-e239-45ec-88f9-c951f57cb2d5"
  }
}