Corrupt .htaccess file

You appear to be denying access to PHP files, which would explain why you are denied access to PHP files:

<FilesMatch ".(py|exe|php)$">
 Order allow,deny
 Deny from all
</FilesMatch>

What is the purpose of this?

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