Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/31ca529e-8e32-42a5-b076-15d5760868f8/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-685184ac-1e45-4047-a9aa-2e7bd6d74686",
      "cw-a13fca9f-ce77-488a-b355-b3794dadf1d6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3951338b-3a86-4db2-bfbe-a10c1a868b3b",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/31ca529e-8e32-42a5-b076-15d5760868f8/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a13fca9f-ce77-488a-b355-b3794dadf1d6",
    "thumbnailNavigationPosition": "far-bottom"
  }
}