Issues separating my Plugin pages into different files

Have you enabled debugging in wordpress?

Open wp-config.php in the root wordpress folder and change this line:

define('WP_DEBUG', false);

to

define('WP_DEBUG', true);

Your PHP errors will then output to the screen.

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