Тур по участку Степыгино 2

[RuntimeException] 
Could not start session because headers have already been sent. "/home/bitrix/www/toors/stepygino-izhs-02/index.php":1. (0)
/home/bitrix/www/bitrix/modules/main/lib/session/session.php:151
#0: Bitrix\Main\Session\Session->start
	/home/bitrix/www/bitrix/modules/main/lib/session/kernelsessionproxy.php:47
#1: Bitrix\Main\Session\KernelSessionProxy->start
	/home/bitrix/www/bitrix/modules/main/include.php:180
#2: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:19
#3: require(string)
	/home/bitrix/www/local/templates/zemexx/include/toors/menu.php:1
#4: include(string)
	/home/bitrix/www/toors/stepygino-izhs-02/index.php:500
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