Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/54238",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a8c51dff-49e5-4aa6-b210-be616b296d86",
      "cw-c4cd7226-6233-4cca-88d9-633c8d6ef98b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-57275baf-491e-43ae-a5fa-50b39e5f84ca",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/54238",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c4cd7226-6233-4cca-88d9-633c8d6ef98b"
  }
}