Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/orb/12900020",
    "isFetching": false
  },
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    "highlightAllAnnotations": false,
    "id": "window-daa383d1-336f-4292-b2aa-42dda64a9cde",
    "manifestId": "https://manifests.collections.yale.edu/ycba/orb/12900020",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ca1d4264-4093-4f6d-beb7-0ac82f9f65cb"
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}