trying to locate the correct file to edit my internal linking anchor tags

If you mean menu links then just do it via WordPress admin by going to Appearance > Menus. Depending how your theme is setup, the menu options available to you and those that you can create will be different.

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