Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dZY3qWA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-78d9cab9-c0a4-4296-96bc-3bcbbe3ddde0",
      "cw-0760038d-ea45-4ced-bfd6-7a87113dab31"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-87bf37b2-75e7-453b-a7cf-512c326c6522",
    "manifestId": "https://dam.iuav.it/iuav/containers/dZY3qWA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0760038d-ea45-4ced-bfd6-7a87113dab31"
  }
}