Quelqu'un saurait pourquoi quand je veux me connecter à un forum je valide et je tombe sur
Strict Standards: Non-static method utf_normalizer::nfkc() should not be called statically in /home/celebsfe/public_html/Forum/includes/utf/utf_
tools.php
on line 1663
[phpBB Debug] PHP Warning: in file /includes/session.php on line 1035: Cannot modify header information - headers already sent by (output started at /includes/utf/utf_tools.php:1663)
[phpBB Debug] PHP Warning: in file /includes/session.php on line 1035: Cannot modify header information - headers already sent by (output started at /includes/utf/utf_tools.php:1663)
[phpBB Debug] PHP Warning: in file /includes/session.php on line 1035: Cannot modify header information - headers already sent by (output started at /includes/utf/utf_tools.php:1663)
[phpBB Debug] PHP Warning: in file /includes/functions.php on line 2496: Cannot modify header information - headers already sent by (output started at /includes/utf/utf_tools.php:1663)
Help please 
