2222
$tax_query = array( 'relation' => 'OR', array( 'taxonomy' => 'app_category', 'terms' => '6', 'field' => 'term_taxonomy_id', 'operator' => 'IN', ), );
$tax_query = array( 'relation' => 'OR', array( 'taxonomy' => 'app_category', 'terms' => '6', 'field' => 'term_taxonomy_id', 'operator' => 'IN', ), );