Mirador viewer

SyntaxError: Unexpected end of JSON input
{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/21609",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8e1a4303-53cd-4686-85f8-69505fffca87",
      "cw-5fe72f28-c5fe-4fc4-8e7b-6345f7d7def4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-63302004-53f2-4a0a-9cfe-ed930b047e9a",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/21609",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5fe72f28-c5fe-4fc4-8e7b-6345f7d7def4"
  }
}
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