Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/54429",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-db75bc6a-6556-4fe3-b634-dfbf99603ebd",
      "cw-79993076-9547-478b-9a81-ae5b984ff154"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-763caf84-53a5-4442-b066-ec4b075a1c51",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/54429",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-79993076-9547-478b-9a81-ae5b984ff154"
  }
}