Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Akr7pxv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-972c2037-4a70-4f35-b212-889039ca949d",
      "cw-371a9a2d-55dd-4782-be2f-7937c4d0081a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a6c706d8-9099-4719-85dd-6754be65149e",
    "manifestId": "https://dam.iuav.it/iuav/containers/Akr7pxv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-371a9a2d-55dd-4782-be2f-7937c4d0081a"
  }
}