Warning: Cannot modify header information - headers already sent by (output started at /home/kiezeldagen/sites/www.kiezeldagen.nl/public_html/includes/common.inc:2561) in drupal_send_headers() (line 1040 of /home/kiezeldagen/sites/www.kiezeldagen.nl/public_html/includes/bootstrap.inc).

PDOException: There is already an active transaction in dblog_watchdog() (line 155 of /home/kiezeldagen/sites/www.kiezeldagen.nl/public_html/modules/dblog/dblog.module).