Blocked Cookie from unexpected output

Hello!

I can’t login in my Wp. It’s my first login on WordPress. After the installation process comes an error saying that cookies are blocked cause of an unexpected error.

This is the debug

Warning: Cannot modify header information – headers already sent by (output started at /home/lkkbaycq/public_html/wp-config.php:1) in /home/lkkbaycq/public_html/wp-login.php on line 390

Warning: Cannot modify header information – headers already sent by (output started at /home/lkkbaycq/public_html/wp-config.php:1) in /home/lkkbaycq/public_html/wp-login.php on line 403