Having the same problem here. I'm shocked this is something people have been requesting for this long and still doesn't exist. It's a little sad that the dev team is not sure if nesting in a modular system is a requirement. Just sad.
Hey @Mohesh_Borah ! Actually, hello everyone. I am curious to know how big of a deal this is now that we have partials and blocks available in local development.
This is a pretty large bummer. It would definitely allow those of us who are designing more modern templates to design more accessible and editable code in complext layouts.
I would also add that a similar error occurs when trying to include partial templates in a global module. Weird since this seems like EXACTLY the kind of thing you would want to do with a partial template.