Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/176fc34d-e489-4b7d-a084-5fb786ce7154/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4f269093-3ab2-4c80-8d83-861e4bd1975f",
      "cw-907bdc39-d534-4eea-88bd-8f77c9639430"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bbfb5ffb-4783-4a33-81de-54063ac53951",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/176fc34d-e489-4b7d-a084-5fb786ce7154/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-907bdc39-d534-4eea-88bd-8f77c9639430",
    "thumbnailNavigationPosition": "far-bottom"
  }
}