Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52908",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b81cbf9a-1e0d-4a88-9d20-1baa462b06ac",
      "cw-5d1c3281-3bde-4ef9-bc2e-be13c7fa2699"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fe45df4e-51bd-468d-b0be-16e34efe24a8",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52908",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5d1c3281-3bde-4ef9-bc2e-be13c7fa2699"
  }
}