TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/P16980-1-B.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5528bd85-00c6-4423-a026-e11855c53484",
      "cw-580c76e2-925f-45f0-9c81-e1c64ef881ff"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-01e75e4e-cf7f-4468-b2e5-56d8aa62c196",
    "manifestId": "https://www.fina.gov.pl/manifest/P16980-1-B.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-580c76e2-925f-45f0-9c81-e1c64ef881ff",
    "view": "single"
  }
}