Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/20612",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-505dbb12-e6c3-4851-a5be-8e561645014d",
      "cw-01ac6574-95eb-4e2f-a3d4-596c7515fe25"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2177d3f8-4560-4566-b84c-380c5fd7c20f",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/20612",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-01ac6574-95eb-4e2f-a3d4-596c7515fe25"
  }
}