Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52258",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1284d796-7ceb-447b-b260-bdfb8254783f",
      "cw-d25001fa-8468-41d9-aa5f-78a70015fa6e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-20d7731b-25e5-4d34-b6f9-5b233ed6de54",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52258",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d25001fa-8468-41d9-aa5f-78a70015fa6e"
  }
}