[BUG]: Error generating lottie scheme code

[EduardoPadilha]

Issue Type

When trying to generate code from a schema I get an error

Context (Environment, Version, Language)

Input Format: json schema
Output Language: C#

CLI, npm, or app.quicktype.io: CLI and app.quicktype.io
Version: 23.0.170

Description

I'm trying to generate a c# class from the schema provided by lottie at https://lottiefiles.github.io/lottie-docs/schema/lottie.schema.json. I copy the raw into a utf-8 file and submit it to the CLI command or copy it directly from the link and paste it into the website https://app.quicktype.io/

Input Data

I think it is too big to isolate into something smaller and understandable, I will leave again the link of the schema provided:
https://lottiefiles.github.io/lottie-docs/schema/lottie.schema.json

Expected Behaviour / Output

Generate schema classes

Current Behaviour / Output

Nothing appears on the website and the CLI returns the message: "Error: s.codePointAt is not a function."

Steps to Reproduce

1. Download the json schema from the above link
2. Save it in a local file with the name "lottie.schema.json"
3. Run the following command "quicktype -s schema lottie.schema.json -o src/Models.cs" in the same directory