Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/9623d8a2-b518-45a6-bb8f-161d0fbf3cbd/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2a064c51-f712-4937-b89e-4b47019a8b2b",
      "cw-b7c997d4-c9de-4d1e-ba4f-e4881c61f43c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9586556e-ed83-491e-80e8-20cf46d48ad1",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/9623d8a2-b518-45a6-bb8f-161d0fbf3cbd/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b7c997d4-c9de-4d1e-ba4f-e4881c61f43c",
    "thumbnailNavigationPosition": "far-bottom"
  }
}