Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/3ffdbb9e-1ab2-43e9-9e2c-976bbdfe6d57/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-390338a6-19a9-4b25-b807-9e54be993df0",
      "cw-9fb0ce48-7348-4d5f-b951-1692af399d9b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a4fd6f3d-d151-4e97-bc11-676fbd873e72",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/3ffdbb9e-1ab2-43e9-9e2c-976bbdfe6d57/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9fb0ce48-7348-4d5f-b951-1692af399d9b",
    "thumbnailNavigationPosition": "far-bottom"
  }
}