Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AOKOpGA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e72c7434-754e-4891-8765-4d1df9c63e66",
      "cw-b4502c0d-6db0-4b43-a2f5-f3c656239840"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-074a2d9d-75d9-4aea-bd47-bf7ebe4cc615",
    "manifestId": "https://dam.iuav.it/iuav/containers/AOKOpGA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b4502c0d-6db0-4b43-a2f5-f3c656239840"
  }
}