TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/P11701-1-B.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ee72655a-9b4b-4f79-9abb-ef032b53750e",
      "cw-b7877c29-c80a-4314-96fb-d2158ece4e8c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0020d26b-8cf8-4854-b547-1212b67d0dd2",
    "manifestId": "https://www.fina.gov.pl/manifest/P11701-1-B.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b7877c29-c80a-4314-96fb-d2158ece4e8c",
    "view": "single"
  }
}