Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2vRn9jv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bfabf66f-71ee-47ca-91ca-c042157c5c4d",
      "cw-e649556a-94b5-4f5a-aec9-8e173d8054d8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0a4317b1-5c74-45ae-9a0b-fcf11a4c6cde",
    "manifestId": "https://dam.iuav.it/iuav/containers/2vRn9jv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e649556a-94b5-4f5a-aec9-8e173d8054d8"
  }
}