Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/40380",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2d4d630c-8891-4351-b654-e704236c40ff",
      "cw-2660ce67-3297-4adf-8ef5-c7c90e583b0e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4260afe0-e814-499b-93bc-f632e8a8056b",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/40380",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2660ce67-3297-4adf-8ef5-c7c90e583b0e"
  }
}