Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Be5lGXA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d992c79f-5c78-4e3c-8cfb-cee08d787adf",
      "cw-6091ec14-022e-484d-b27c-235cf6f640f1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-777773fb-df92-4fdf-9e26-36af9a8f6163",
    "manifestId": "https://dam.iuav.it/iuav/containers/Be5lGXA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6091ec14-022e-484d-b27c-235cf6f640f1"
  }
}