Catchable fatal error: Object of class WP_Error could not be converted to string in

You get the terms of directors_tv taxonomy, but try to get the next link in the context of directors taxonomy. You probably should use directors_tv in both places or rethink your DB structure as you can not use the same term id in the context of different taxonomies.

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