Problem with webpack import?

Question

webpack

Good afternoon! I read an article on Habré, or rather, the part that talked about assembling html:
https://habr.com/ru/post/350886/?_ga=2.118565131.3... I
applied the code from there. I only needed to collect the code from different html files into one, in index.html
But instead of generating code, this came out in the browser:
[object Module]
Second page.
[object Module] instead of these "Object Modules" the code from header and
aside.html should have appeared help.git