Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/54171",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-dae77042-1c13-4982-91e7-28500298e355",
      "cw-fa7788b2-d454-43bd-a905-3822dbee64a9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e28f33ae-0752-48e6-8a7d-c8d0ff60dddf",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/54171",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fa7788b2-d454-43bd-a905-3822dbee64a9"
  }
}