its the seo mod fault:
Code
[Tue Sep 23 10:07:31.182437 2014] [:error] [pid 3736:tid 1656] [client ::1:58330] PHP Fatal error: Call to a member function getClassName() on a non-object in D:\\wamp\\www\\backup\\wcf\\lib\\system\\event\\listener\\SEOOutputReplaceTitleListener.class.php on line 26, referer: http://localhost:81/backup/index.php/Login/
[Tue Sep 23 10:07:31.182437 2014] [:error] [pid 3736:tid 1656] [client ::1:58330] PHP Stack trace:, referer: http://localhost:81/backup/index.php/Login/
[Tue Sep 23 10:07:31.182437 2014] [:error] [pid 3736:tid 1656] [client ::1:58330] PHP 1. wcf\\system\\WCF::handleException() D:\\wamp\\www\\backup\\wcf\\lib\\system\\WCF.class.php:0, referer: http://localhost:81/backup/index.php/Login/
[Tue Sep 23 10:07:31.182437 2014] [:error] [pid 3736:tid 1656] [client ::1:58330] PHP 2. wcf\\util\\HeaderUtil::parseOutput() D:\\wamp\\www\\backup\\wcf\\lib\\util\\HeaderUtil.class.php:0, referer: http://localhost:81/backup/index.php/Login/
[Tue Sep 23 10:07:31.182437 2014] [:error] [pid 3736:tid 1656] [client ::1:58330] PHP 3. wcf\\system\\event\\EventHandler->fireAction() D:\\wamp\\www\\backup\\wcf\\lib\\util\\HeaderUtil.class.php:117, referer: http://localhost:81/backup/index.php/Login/
[Tue Sep 23 10:07:31.182437 2014] [:error] [pid 3736:tid 1656] [client ::1:58330] PHP 4. wcf\\system\\event\\listener\\SEOOutputReplaceTitleListener->execute() D:\\wamp\\www\\backup\\wcf\\lib\\system\\event\\EventHandler.class.php:189, referer: http://localhost:81/backup/index.php/Login/
On my localhost i can access the error logs