Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/orb/3964219",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cead2e86-77bc-4f7c-8887-0e43d805c14f",
      "cw-5546d6c3-28a2-4fae-b2f3-98f9d9e43dac"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-de4f6646-2b46-4c70-9e1b-5a4303755915",
    "manifestId": "https://manifests.collections.yale.edu/ycba/orb/3964219",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5546d6c3-28a2-4fae-b2f3-98f9d9e43dac"
  }
}