Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/69449",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1e9e4120-ec8b-4acc-aff1-befae91e09a5",
      "cw-440d5287-27b0-402f-ac81-89f6e6ee704c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c15461d2-93ca-41f9-8960-fc8a9a080f1b",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/69449",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-440d5287-27b0-402f-ac81-89f6e6ee704c"
  }
}