Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/texas-wesleyan/iiif/21bbf669-ba69-428f-a358-3bd95ede111a/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b0ef4118-7c15-43db-9688-7a6ae2909ab6",
      "cw-ec9eddea-76cd-45e9-b3d1-19b54f0358b6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-794e9541-533f-4c24-92b4-5cfae9830659",
    "manifestId": "https://iiif.quartexcollections.com/texas-wesleyan/iiif/21bbf669-ba69-428f-a358-3bd95ede111a/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ec9eddea-76cd-45e9-b3d1-19b54f0358b6",
    "thumbnailNavigationPosition": "far-bottom"
  }
}