Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/3be21047-e376-4cd5-a1c1-8425fc053efe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ecbb1885-9c7a-41cb-a48f-7cd3124acd6b",
      "cw-81f7f925-f4cf-45af-a949-ac5cbf884caf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0d3ba0f3-d123-49ea-912a-5fd574b92a1a",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/3be21047-e376-4cd5-a1c1-8425fc053efe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-81f7f925-f4cf-45af-a949-ac5cbf884caf",
    "thumbnailNavigationPosition": "far-bottom"
  }
}