Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/8f495536-4ecb-4dc6-969f-e801005afdd8/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-abdc2b0b-cca8-4a12-907b-e0dcdcf9b993",
      "cw-5f68a8c5-cb1f-4c41-b33a-d0ba0cb81562"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ac36e4a2-d253-4ee9-8588-be8c80db71af",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/8f495536-4ecb-4dc6-969f-e801005afdd8/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5f68a8c5-cb1f-4c41-b33a-d0ba0cb81562",
    "thumbnailNavigationPosition": "far-bottom"
  }
}