TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/pogrzeb_swierszcza_3_manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fd7d3a13-32ba-4829-8f75-55bd83bc55d4",
      "cw-6619879e-54fd-4a89-a6e1-20428583367c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b2ec146c-7b3d-4ded-8ef8-032ba0207f91",
    "manifestId": "https://www.fina.gov.pl/manifest/pogrzeb_swierszcza_3_manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6619879e-54fd-4a89-a6e1-20428583367c",
    "view": "single"
  }
}