Custom taxonomy throw error 404

Answer was simple: remove %gaming_genre_new% from rewrite for taxonomy, so it looks like this:

'rewrite'               => array('slug'=>'gaming','with_front'=>'false'),

Now I wonder why original code worked for my friend and for my teacher…

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