Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/8307f1bc-e100-4d25-bf0f-3c9c06050774/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b43f39f5-f518-40e1-abd7-f1b19d773213",
      "cw-fc9c961d-d740-430d-b47c-74c38276c22b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-999933ce-9f08-4817-8aeb-1cb616a1839d",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/8307f1bc-e100-4d25-bf0f-3c9c06050774/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fc9c961d-d740-430d-b47c-74c38276c22b",
    "thumbnailNavigationPosition": "far-bottom"
  }
}