Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50lO3A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c999ccc2-8428-43ac-b91a-f2244b6b5bfd",
      "cw-d0563413-3243-4fb0-af93-de1e20b49ca9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fa8fec1b-65c9-4cd0-a750-6ae50a179d13",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50lO3A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d0563413-3243-4fb0-af93-de1e20b49ca9"
  }
}