“post-name” Renders Using page.php, but “post-name-2” renders with single.php

Without having access to your admin, I’d have to assume you have a page with the slug “claudia-lucero” – in addition to your post.

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