TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/uzkJxlhV_manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-57ecd384-0f7f-4802-acfd-aca54f9da531",
      "cw-3a6cf92c-8552-4a12-9ddf-3554f19de135"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1ff7fde8-d46d-45b3-9504-e298d6112234",
    "manifestId": "https://www.fina.gov.pl/manifest/uzkJxlhV_manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3a6cf92c-8552-4a12-9ddf-3554f19de135",
    "view": "single"
  }
}