Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/statelibrarypa/iiif/b21f3212-7504-43ef-897c-c913e0b6c473/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-87e7c7ad-9c42-4457-a1ff-431721e27024",
      "cw-2f230053-3f10-4adb-9d5b-a10aa2f1909f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-658e7cf2-e292-45f8-a161-0b2b62a17b36",
    "manifestId": "https://iiif.quartexcollections.com/statelibrarypa/iiif/b21f3212-7504-43ef-897c-c913e0b6c473/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2f230053-3f10-4adb-9d5b-a10aa2f1909f",
    "thumbnailNavigationPosition": "far-bottom"
  }
}