Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/XeWY5kv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d8147c64-0564-4422-8e67-432fae59b118",
      "cw-7e97b1fc-d050-49df-b068-a1d9e59b0449"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7bea161d-7af8-440b-bbe6-9d7cdaef9ca4",
    "manifestId": "https://dam.iuav.it/iuav/containers/XeWY5kv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7e97b1fc-d050-49df-b068-a1d9e59b0449"
  }
}