TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/0TdA0pw2_manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a640e954-61da-4cee-9151-6b224c3b9d88",
      "cw-f9a4cdc5-5bd6-4e53-8068-30e8ba03725b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e716a2f5-6838-4c3d-a61a-01772051e529",
    "manifestId": "https://www.fina.gov.pl/manifest/0TdA0pw2_manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f9a4cdc5-5bd6-4e53-8068-30e8ba03725b",
    "view": "single"
  }
}