Mirador viewer

SyntaxError: Unexpected end of JSON input
{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/56840",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8a95db84-bc3b-4952-babb-8e5796cfbf1e",
      "cw-f2fef2d5-6381-4c33-bccc-40ca00b4a7a2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8ae5653b-0382-4da1-bf99-67f5b02a45cb",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/56840",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f2fef2d5-6381-4c33-bccc-40ca00b4a7a2"
  }
}
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