Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/11877",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7f013467-eaae-4bea-b804-4aa716e18c1d",
      "cw-3eff3e4f-d83c-4588-84bb-be3ed76fa3db"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-89897424-2fd4-4717-93df-2b8083ad1f0e",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/11877",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3eff3e4f-d83c-4588-84bb-be3ed76fa3db"
  }
}