Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/b3cbe537-7d6f-4f4a-aac9-76e8343ec8df/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bb33efa6-9b2c-4885-92d5-f3fb244abd4a",
      "cw-98c0c198-e13d-4863-8c05-54374a18b422"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-88f3a388-dc77-4284-874e-de9770df80a5",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/b3cbe537-7d6f-4f4a-aac9-76e8343ec8df/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-98c0c198-e13d-4863-8c05-54374a18b422",
    "thumbnailNavigationPosition": "far-bottom"
  }
}