I’m working on a plugin for a customer with an existing WP site. I added some registration login with add_filter('registration_errors'...) but the code does not seem to be called. All my other hooks are working fine.

    add_filter( 'registration_errors', function($  errors, $  sanitized_user_login, $  user_email) use ($  rwlh_config) {         RwlhLogger::Log("\n\nBegin rwlh reg error filter", 'debug');                  if(!$  errors->get_error_code()) {             $  password = $  _POST[$  rwlh_config['regPasswordField']];             $  artistName = $  _POST[$  rwlh_config['regArtistNameField']];                  $  errors = rwlh_register( $  artistName, $  user_email, $  password, $  errors );                     }          return $  errors;     }, 10, 3); 

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