Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AwqP5yZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-19e02c9e-3768-467b-adf6-442b0117e228",
      "cw-d05b8f38-3d02-496f-bb6c-2dc60cabdfbc"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dd41a393-fa52-4c7c-89cc-7d18c73e8205",
    "manifestId": "https://dam.iuav.it/iuav/containers/AwqP5yZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d05b8f38-3d02-496f-bb6c-2dc60cabdfbc"
  }
}