E_WARNING: trim() expects parameter 1 to be string, array given

in trim called at /var/www/wordpress/html/wp-includes/class-wp-query.php (736)
…::parse_query called at /var/www/wordpress/html/wp-includes/
class-wp-query.php (1621)
…ry::get_posts called at /var/www/wordpress/html/wp-includes/
class-wp-query.php (3230)
in WP_Query::query called at /var/www/wordpress/html/wp-includes/class-wp.php (599)
in WP::query_posts called at /var/www/wordpress/html/wp-includes/class-wp.php (715)
in WP::main called at /var/www/wordpress/html/wp-includes/functions.php (960)
in wp called at /var/www/wordpress/html/wp-blog-header.php (16)
in require called at /var/www/wordpress/html/index.php (17)