Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/21764",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9e6585a7-8cf0-4eee-9732-e4f59a5d9762",
      "cw-8493c861-3b5b-4317-a70f-9222086406ab"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1e8347d7-3e24-456f-b953-86f7731cb52f",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/21764",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8493c861-3b5b-4317-a70f-9222086406ab"
  }
}