Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52260",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a2d59ce8-5254-4a7c-a455-fe30070a27f7",
      "cw-df44c5ba-f067-4125-80cb-3d4bca2e4b2e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a6540c3f-1871-469c-858f-db2f6aab1398",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52260",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-df44c5ba-f067-4125-80cb-3d4bca2e4b2e"
  }
}