Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/29139",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d5b3bef7-7de8-4bd0-be9d-d85a798ddabb",
      "cw-f988cf2e-33fc-4568-adb3-1f544753ca55"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-31b647c1-e63c-4267-b2de-f6bf7019d496",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/29139",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f988cf2e-33fc-4568-adb3-1f544753ca55"
  }
}