(1) MUI V4버전 튜토:

https://medium.com/@jihochoi1123/react%EC%99%80-electronjs%EB%A1%9C-%EB%8D%B0%EC%8A%A4%ED%81%AC%ED%86%B1-%EC%95%B1-%EB%A7%8C%EB%93%A4%EC%96%B4%EB%B3%B4%EA%B8%B0-2-%EB%9D%BC%EC%9A%B0%ED%8C%85-%EB%B0%8F-electronjs-%EA%B3%A0%EC%9C%A0%EA%B8%B0%EB%8A%A5%EB%93%A4-edf013377770

(2) MUI V5버전으로 Migration (official):

https://mui.com/blog/mui-core-v5/

(1) -> (2)