Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/5v2bPnv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-65bfb004-55d9-4c20-9e7f-ba6665402b0e",
      "cw-0f8d8831-f4fb-4dd5-9d5a-09c7b18b878e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f658a204-5054-4663-aa0d-a5ff26822c89",
    "manifestId": "https://dam.iuav.it/iuav/containers/5v2bPnv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0f8d8831-f4fb-4dd5-9d5a-09c7b18b878e"
  }
}