Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/d6f73968-8126-44ac-9204-57d454b7aca8/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a28f9609-f94a-4fc4-bc7d-49f93f5719c3",
      "cw-cb4d071d-e50c-4220-bf34-98816a26717c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1ebf48e7-6f71-41ac-a14a-ff50b04469da",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/d6f73968-8126-44ac-9204-57d454b7aca8/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-cb4d071d-e50c-4220-bf34-98816a26717c",
    "thumbnailNavigationPosition": "far-bottom"
  }
}