Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52478",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ee875bb7-4f93-4b67-bb51-fa8578590662",
      "cw-8798c370-e183-46f4-a1f5-371dda189c42"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b5c636a9-66e6-4205-b5f0-e8a7700132b7",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52478",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8798c370-e183-46f4-a1f5-371dda189c42"
  }
}