Congratulations! You broke it! You are in debug mode. Your session will not be destroyed ;-)
Zend_Log_Exception: "/home/webmaster.slawistyka/html/ksiegarnia/environment/logs/core-error.log.txt" cannot be opened with mode "a" thrown in /libraries/Zend/Log/Writer/Stream.php:81 [0] Zend_Log_Writer_Stream->__construct() called at /application/core/System/Bootstrap.php:620 [1] System_Bootstrap->setLogs() called at /application/core/InitBoot.php:213 [2] require() called at /index.php:48