Erro ao logar

Boa noite, não sei se isso já foi perguntado mais estou tendo dificuldade com relação a me logar no WordPress, pois acusa estes erros abaixo:

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-login.php on line 349

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-login.php on line 361

Estas mensagens assim apareceram ao terminar a instalação do WordPress e as mensagens abaixo, aparece ao tentar me logar no WordPress:

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-login.php on line 349

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-login.php on line 361

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-includes/pluggable.php on line 669

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-includes/pluggable.php on line 670

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-includes/pluggable.php on line 671

Warning: Cannot modify header information – headers already sent by (output started at /home/jackalgamer/www/wp-config.php:1) in /home/jackalgamer/www/wp-includes/pluggable.php on line 866

Alguém saberia me dizer o que esta errado, pois olhei os arquivos e não localizei os erros.