Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/55249",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6bbc740e-6e5e-454d-a9c5-d47031dede2b",
      "cw-80beb2bd-7fa2-4415-97fe-c729392a3231"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-38c2c6da-b874-45d9-a8e2-43bc788af3c4",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/55249",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-80beb2bd-7fa2-4415-97fe-c729392a3231"
  }
}