Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/DvQdKJZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0b65f288-2e00-4311-81ed-df6b30840390",
      "cw-8f27a1c3-bf47-4f8e-9898-44a7cd0a1f76"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1a64e593-a9de-40d3-801a-d83011aec3d1",
    "manifestId": "https://dam.iuav.it/iuav/containers/DvQdKJZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8f27a1c3-bf47-4f8e-9898-44a7cd0a1f76"
  }
}