Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/71219",
    "isFetching": false
  },
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    "id": "window-1205a6ed-2add-442a-a775-2649cdf4dca3",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/71219",
    "maximized": false,
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    "rotation": null,
    "selectedAnnotations": {},
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    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-71b18ad8-3c2b-4381-822b-e63c292434bb"
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}