Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/51204",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6afaf9f5-1ebc-437e-9b56-4cc4e5bf4bd5",
      "cw-e4a69a5e-678f-4da9-8366-800150ee7250"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3782289f-81fa-48ee-8dac-90e065134713",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/51204",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e4a69a5e-678f-4da9-8366-800150ee7250"
  }
}