Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/77c78fb0-5149-4069-b33a-51ef55f9b009/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f63fc1eb-eae3-4f8b-bed2-4b1ac0a406ad",
      "cw-30a8717c-c851-4cb5-a302-b4251109f740"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0bfd5960-aacf-4730-bffa-0379d8e61adb",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/77c78fb0-5149-4069-b33a-51ef55f9b009/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-30a8717c-c851-4cb5-a302-b4251109f740",
    "thumbnailNavigationPosition": "far-bottom"
  }
}