Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/54c9da63-a306-4f33-a554-cb82144eeb3a/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0945a645-6846-4c01-aa03-8af65874c5cd",
      "cw-3cedbbc5-994b-4d86-88d8-19a54e556c86"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-af448dca-399a-47ae-a37c-aa574c30b1e7",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/54c9da63-a306-4f33-a554-cb82144eeb3a/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3cedbbc5-994b-4d86-88d8-19a54e556c86",
    "thumbnailNavigationPosition": "far-bottom"
  }
}