Customizing theme-classic's Navbar/Layout returns an error

[sradu]

Hi!

I'm trying to add a horizontal menu under the navbar for certain docs categories. Since this is not possible via docusaurus right now I tried to overwrite the NavBar/Layout/index.tsx theme file to add it.

Unfortunately I'm getting this error:

Hook useNavbarMobileSidebar is called outside the <NavbarMobileSidebarProvider>.

Any suggestions on how to make it happy?

Thank you!

[slorber]

We can't help without seeing a runnable sandbox