Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/c0d826af-e699-41d8-be9a-9d4bd71cf017/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-435df6ef-f1a9-43ac-86f6-7edca607f8f1",
      "cw-b1a85ca6-a2d9-4cc3-84f8-8c36357ac2cd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a6d014b7-bd14-415c-bcac-7ae0183722fa",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/c0d826af-e699-41d8-be9a-9d4bd71cf017/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b1a85ca6-a2d9-4cc3-84f8-8c36357ac2cd",
    "thumbnailNavigationPosition": "far-bottom"
  }
}