TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/P9364-1-B.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ac06befb-f2a0-4161-97d6-a45c7c13681e",
      "cw-d2160c9e-c6ed-44f5-ba00-dcd2250981d5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c6021a49-5bf5-487a-b006-b44a3da4ef88",
    "manifestId": "https://www.fina.gov.pl/manifest/P9364-1-B.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d2160c9e-c6ed-44f5-ba00-dcd2250981d5",
    "view": "single"
  }
}