Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZpwJE9e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-97a40031-d289-491a-b510-850fad094b79",
      "cw-ea58b0c0-d504-4d7e-bbe3-de8f2f776438"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-123762f4-3398-423e-8221-bc3e99b3db19",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZpwJE9e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ea58b0c0-d504-4d7e-bbe3-de8f2f776438"
  }
}