Installing minibb and add new user.
But admin page not work

Warning: Cannot modify header information - headers already sent by (output started at /var/www/web235/web/forum/setup_options.php:3) in /var/www/web235/web/forum/bb_cookie.php on line 102

Warning: Cannot modify header information - headers already sent by (output started at /var/www/web235/web/forum/setup_options.php:3) in /var/www/web235/web/forum/bb_cookie.php on line 88

Warning: Cannot modify header information - headers already sent by (output started at /var/www/web235/web/forum/setup_options.php:3) in /var/www/web235/web/forum/bb_admin.php on line 116

This particular error message has long been identified as not being a bug-- please look in the miniBB FAQ first before posting a question.

For the impatient, below is the link to a page that explains the cause of the error and ways to resolve the error: "Cannot modify header information" page.

All the best -
mb