Mirador viewer

SyntaxError: Unexpected end of JSON input
{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/56778",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5d7d6cfa-0db5-4246-8f38-737e4a4fe340",
      "cw-a349de72-4cb4-4a76-ae02-6c8570cbd2eb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-40d69d49-833c-4c37-a31f-271bb2cc2afa",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/56778",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a349de72-4cb4-4a76-ae02-6c8570cbd2eb"
  }
}
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