Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Pe1gYlv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e2bdc809-99cc-4baa-bbd5-fda633aadbd7",
      "cw-05bbf4a2-6a37-4b8f-8305-ac5aa9a7db14"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3da6f600-ea51-4e54-9aa6-6148b2b7f39b",
    "manifestId": "https://dam.iuav.it/iuav/containers/Pe1gYlv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-05bbf4a2-6a37-4b8f-8305-ac5aa9a7db14"
  }
}