Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52210",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-49a017b6-d298-4622-854b-ef850b84fe9e",
      "cw-1f4b46f5-e6bd-431e-8519-0ce3a119866e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-383e3186-515c-489c-8aec-d4650de477f4",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52210",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1f4b46f5-e6bd-431e-8519-0ce3a119866e"
  }
}