Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/statelibrarypa/iiif/754ce778-3179-4bfa-b1de-2c6d32b80387/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b420d173-4e71-47a9-b220-501ec4964cf6",
      "cw-2e1c1df5-613e-43d5-b83a-ee7987c78b31"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-55fc0ee6-fcac-4b19-a630-7b12917d4f06",
    "manifestId": "https://iiif.quartexcollections.com/statelibrarypa/iiif/754ce778-3179-4bfa-b1de-2c6d32b80387/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2e1c1df5-613e-43d5-b83a-ee7987c78b31",
    "thumbnailNavigationPosition": "far-bottom"
  }
}