TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://objects.library.uu.nl/manifest/iiif/v3/1874-236473",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3768dfca-9200-46ed-9297-514fc0de8aef",
      "cw-c1b8d443-5f27-4a43-98cb-5812d867d41e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b7479920-c03f-475c-86b6-cb24cefa8742",
    "manifestId": "https://objects.library.uu.nl/manifest/iiif/v3/1874-236473",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c1b8d443-5f27-4a43-98cb-5812d867d41e",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "view": "single",
    "canvasIndex": "0"
  }
}