新手，求大神帮忙解决一下cookies错误

登录后台出现错误，求解决办法。代码如下：
Warning:Cannot modify header information - headers already sent by (output started at /data/home/qxu2063010145/htdocs/wp-config.php:1) in /data/home/qxu2063010145/htdocs/wp-login.php on line 387 Warning: Cannot modify header information - headers already sent by (output started at /data/home/qxu2063010145/htdocs/wp-config.php:1) in /data/home/qxu2063010145/htdocs/wp-login.php on line 400