Modulars are not apparing

when i insert a module in a page, after i save it, i go in the page off the website to see it, and it does not appare.
the module result "published non-visible non-routable"
why?

@nuv4, A tad more information might be helpful. For example:

• Which Grav version are you using?
• Which theme are you using?
• Did you add the child module using Admin?
• How does the folder structure look like after saving the page? Should be something similar to:
  TXTCopy

  user/pages
  └── 01.home
    ├── 01._hero
    │   ├── header.jpg
    │   └── hero.md
    ├── 02._highlights
    │   └── features.md
    ├── 03._callout
    │   ├── jeep.jpg
    │   └── text.md
    ├── 04._features
    │   └── features.md
    └── modular.md
  

  Above tree is taken from skeleton 'One-Page Site' using $ tree user/pages | clip.exe (on Windows: $ tree user/pages | clip)

• What's the frontmatter of the 'modular.md'?
• What's the frontmatter of the child module's *.md?

hello
i use [Grav] v1.7.7
the theme is [Quark] v2.0.3
i have add child module from admin web page
where i lunch tree user/pages | clip.exe ?

@nuv4, You launch tree user/pages | clipe.exe from the command prompt aka terminal.

@pamtbaau:
clipe.exe

but clipe.exe where is?

@nuv4:
clipe.exe

????01.home
????02.typography
? ????_01hero
????03.galleria
????_foto
ok this is tree result

yes I've downloaded the skeleton one as per your suggestion, and it works, in fact, so well with all the modules, I've leart how to make the modules and it makes them right,
thanks
Best regards