Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/26ca9594-6f12-4a20-850b-be116501a612/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-94dee064-8804-44c2-a1f1-1cbcdb25c6e0",
      "cw-ff196f45-4df8-4776-85d8-8d999016eaa2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-54159592-182b-4ab8-9058-0f6c9264b9bd",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/26ca9594-6f12-4a20-850b-be116501a612/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ff196f45-4df8-4776-85d8-8d999016eaa2",
    "thumbnailNavigationPosition": "far-bottom"
  }
}