[Error] 
Call to a member function return_links() on null (0)
/home/bitrix/ext_www/ohranatruda.ru/local/templates/ohranatruda_2017/header.php:450
#0: include_once
	/home/bitrix/ext_www/ohranatruda.ru/bitrix/modules/main/include/prolog_after.php:96
#1: require(string)
	/home/bitrix/ext_www/ohranatruda.ru/bitrix/modules/main/include/prolog.php:11
#2: require_once(string)
	/home/bitrix/ext_www/ohranatruda.ru/bitrix/header.php:1
#3: require(string)
	/home/bitrix/ext_www/ohranatruda.ru/ot_biblio/ot/index.php:3
#4: include_once(string)
	/home/bitrix/ext_www/ohranatruda.ru/bitrix/modules/main/include/urlrewrite.php:159
#5: include_once(string)
	/home/bitrix/ext_www/ohranatruda.ru/bitrix/urlrewrite.php:2