Hi! I've been using this library for years now (thank you) and unfortunately, for some reason, cannot get it to work when trying to upload new Online Store 2.0 JSON template files. It always results in a 422 Unprocessable Entity error.

{
  "layout": "fall-winter-2021",
  "sections": {
    "main": {
      "type": "hero-big-headline"
    }
  },
  "order": [
    "main"
  ]
}

The layout file also exists, the section file hero-big-headline exists, and also saving the same code via the theme's code editor saves just fine. Is it because this lib is expecting these files to be liquid files? Any idea how to spit out the exact error that is causing the error to be triggered? Thanks for any help you might be able to offer.