Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wAkx4Le/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e129ed7a-1f08-42cb-af17-b82ba69b6711",
      "cw-42f2a478-4f2d-45f0-b19a-c9b8bfac9ba2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-56c444c7-0578-4d8a-b8fb-168f4d38a2b8",
    "manifestId": "https://dam.iuav.it/iuav/containers/wAkx4Le/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-42f2a478-4f2d-45f0-b19a-c9b8bfac9ba2"
  }
}