Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/28699",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9484c88d-398d-490e-beef-17ec0ac8ae6c",
      "cw-e18c47c1-23c0-4c39-b000-e126bec01805"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-db30aca5-ed5e-4427-bc63-0e3a10cf9c83",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/28699",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e18c47c1-23c0-4c39-b000-e126bec01805"
  }
}