Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/6ed15503-4bf9-474f-b750-f8dbce0c044c/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-74be7ee9-7f15-422f-bcac-15978c0221fc",
      "cw-17ece6c9-605c-4224-83e1-06b974f15a55"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-98a9c5e2-e0c3-4351-8693-53cfb3808dd4",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/6ed15503-4bf9-474f-b750-f8dbce0c044c/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-17ece6c9-605c-4224-83e1-06b974f15a55",
    "thumbnailNavigationPosition": "far-bottom"
  }
}