Lesson track system

[next-mdx-remote-client] error compiling MDX: Unexpected character `!` (U+0021) before name, expected a character that can start a name, such as a letter, `$`, or `_` (note: to create a comment in MDX, use `{/* text */}`) More information: https://mdxjs.com/docs/troubleshooting-mdx 🧑‍🔧 See how to debug and solve most common MDX errors in our docs: https://flowershow.app/docs/debug-mdx-errors