Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/4237",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bb7f9285-1b99-48c7-9bd7-cc0298357678",
      "cw-9790c061-3970-46fc-ab8f-2aa2b7529c2d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-02029176-bfdf-43ac-b008-91a414a523ec",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/4237",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9790c061-3970-46fc-ab8f-2aa2b7529c2d"
  }
}