Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/avXYX9A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-71789bfb-8f78-458f-9469-00e2d8300fdf",
      "cw-bd830718-fe3a-409a-bbdb-a3d284bd48f3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e317f8f9-ec43-4886-88cb-5275230a22b9",
    "manifestId": "https://dam.iuav.it/iuav/containers/avXYX9A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bd830718-fe3a-409a-bbdb-a3d284bd48f3"
  }
}