Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/3993",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bcfdcc94-f62b-4771-a4dc-6dd80791cc8f",
      "cw-5a09e6b5-7c4e-4785-bf04-7614f6172d8e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a5fe5fba-40e3-4c06-a0cb-30009ee30d7d",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/3993",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5a09e6b5-7c4e-4785-bf04-7614f6172d8e"
  }
}