Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/68963",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-888f1aba-1685-42da-8b84-db0f9e40349a",
      "cw-371782f4-cce4-4685-90b1-d85982102b6b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-67795776-39df-4419-ba00-da00046667c6",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/68963",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-371782f4-cce4-4685-90b1-d85982102b6b"
  }
}