Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/50866",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f07deb19-785c-4277-9e5e-c4c7603fce47",
      "cw-df4c3973-0453-481e-9e7d-3f242f8a7570"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d4949801-9ff1-4957-ba28-390c533b3698",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/50866",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-df4c3973-0453-481e-9e7d-3f242f8a7570"
  }
}