TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/P7767-1-B.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-350ae540-0c07-4311-9dcd-0256fcd99437",
      "cw-a7c252dc-a98b-4b44-b432-2eb2da32eb5f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-564b9e3a-105a-41f9-b01c-8ef573a0a066",
    "manifestId": "https://www.fina.gov.pl/manifest/P7767-1-B.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a7c252dc-a98b-4b44-b432-2eb2da32eb5f",
    "view": "single"
  }
}