Mirador viewer

SyntaxError: Unexpected end of JSON input
{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/56771",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a3efcbf7-1c98-4394-a6a7-15ad5a575186",
      "cw-58281555-68ec-49e9-ab39-aa29d1fe5eda"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c92e72bc-0e27-4b73-b91a-02ec0e74985d",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/56771",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-58281555-68ec-49e9-ab39-aa29d1fe5eda"
  }
}
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