TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/9vi1nIhi_manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-99fd4804-6572-4c8b-a418-ee1cc7e15ea4",
      "cw-d730a476-2e3c-4387-b2e4-2999ee01fd83"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-89f6318f-6fce-466b-9f7e-0baf969a9dae",
    "manifestId": "https://www.fina.gov.pl/manifest/9vi1nIhi_manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d730a476-2e3c-4387-b2e4-2999ee01fd83",
    "view": "single"
  }
}