Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/8e88a818-81bd-4767-b534-1a2042b9a36f/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d708edc5-257d-4828-95e2-b1b53dda500d",
      "cw-8a3f2602-da51-4e22-9a23-7201d02513b5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d5930424-7e37-4fa5-b555-cc182a714e61",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/8e88a818-81bd-4767-b534-1a2042b9a36f/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8a3f2602-da51-4e22-9a23-7201d02513b5",
    "thumbnailNavigationPosition": "far-bottom"
  }
}