Problem with the wp-admin

Hi there,

I’d like to login as admin on

http://www.queensgambit.com/go/wp-admin/

but all I get is this sentence:

Warning: Cannot modify header information – headers already sent by (output started at /homepages/42/d93465135/htdocs/go/wp-config.php:1) in /homepages/42/d93465135/htdocs/go/wp-includes/pluggable.php on line 694

The result on

http://www.queensgambit.com/go/wp-login/

isn’t much better …

What can I do?

Thanks for your help!