Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/zegPgwZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4da26f66-6f01-441c-b50b-69a7f3d48afa",
      "cw-50cfd233-f83e-4f1a-a2c1-f41b71acce6b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0b9066eb-e8d3-4bf2-9be4-4a9210f4afe0",
    "manifestId": "https://dam.iuav.it/iuav/containers/zegPgwZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-50cfd233-f83e-4f1a-a2c1-f41b71acce6b"
  }
}