TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://www.fina.gov.pl/manifest/pan_kleks_w_kosmosie_87_manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-64ada55b-ae66-4c91-8742-3dfc07498d0d",
      "cw-f7025acd-1248-4ce3-ac48-d6490fd6fd04"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-16097f0b-7169-49ff-9fea-7482519db782",
    "manifestId": "https://www.fina.gov.pl/manifest/pan_kleks_w_kosmosie_87_manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f7025acd-1248-4ce3-ac48-d6490fd6fd04",
    "view": "single"
  }
}