How can I eliminate the top-level URL slug in WordPress while still being able to access child pages, particularly three levels deep or more?

How can I eliminate the top-level URL slug in WordPress while still being able to access child pages, particularly three levels deep or more?

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)