Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/30720",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fdb69b5b-4c15-4148-a2c3-97457a415d15",
      "cw-3ad155e3-c00f-4ca5-9b46-bdfa70ce38ca"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c8dd3cf8-7070-4575-a66f-0e9bd84ccc65",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/30720",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3ad155e3-c00f-4ca5-9b46-bdfa70ce38ca"
  }
}