Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Ye0Xlje/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ef7fb2c2-f2fe-4c16-a76e-f30c09b2c0ab",
      "cw-26274884-b068-46eb-a364-f41ef38afe76"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5aa0cdce-44a3-4d01-93b8-a584b8edf8e1",
    "manifestId": "https://dam.iuav.it/iuav/containers/Ye0Xlje/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-26274884-b068-46eb-a364-f41ef38afe76"
  }
}