Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AMjy6De/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c3a9feb8-a59a-466c-b49f-bed041d48147",
      "cw-764cb546-5707-4728-98f8-8490959f6525"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-75774f9e-e1e7-4a21-aa2b-1115d17fc520",
    "manifestId": "https://dam.iuav.it/iuav/containers/AMjy6De/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-764cb546-5707-4728-98f8-8490959f6525"
  }
}