Having hierarchies inside WordPress custom post type

I discovered that if you press fast_edit before editing the page, there is an option to choose the superior page. While if you access edit this option is not present.

The reason might be a collision between plugins or between a plugin and WordPress.

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