Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AMq219A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8099dc60-c190-4f2b-b567-ceccc07e2139",
      "cw-2884dc11-7fee-41cd-972f-5ac7181248b8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7069d777-ba10-4b52-8a9b-8f49e960e040",
    "manifestId": "https://dam.iuav.it/iuav/containers/AMq219A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2884dc11-7fee-41cd-972f-5ac7181248b8"
  }
}