SLUG don't work in chapter or page sub chapter

[Deleted user]

hi,

i will use SLUG for custom my URL but it doesn't work when my page is a chapter (_index.md) or a sub chapter (Folder/_index.md). it works for page only.

https://zupimages.net/viewer.php?id=21/30/ak2k.png

Could you help me ?
Thanks for your work