[Error] 
Class 'Alexkova\Market\Core' not found (0)
/home/decoron2/public_html/.left.menu_ext.php:6
#0: include
	/home/decoron2/public_html/bitrix/modules/main/classes/general/menu.php:115
#1: CMenu->Init(string, boolean, string, boolean)
	/home/decoron2/public_html/bitrix/components/bitrix/menu/class.php:98
#2: CBitrixMenuComponent->getChildMenuRecursive(array, array, string, boolean, string, integer, integer, boolean, boolean)
	/home/decoron2/public_html/bitrix/components/bitrix/menu/component.php:71
#3: include(string)
	/home/decoron2/public_html/bitrix/modules/main/classes/general/component.php:552
#4: CBitrixComponent->__includeComponent()
	/home/decoron2/public_html/bitrix/modules/main/classes/general/component.php:97
#5: CBitrixComponent->executeComponent()
	/home/decoron2/public_html/bitrix/modules/main/classes/general/component.php:589
#6: CBitrixComponent->includeComponent(string, array, NULL)
	/home/decoron2/public_html/bitrix/modules/main/classes/general/main.php:1046
#7: CAllMain->IncludeComponent(string, string, array)
	/home/decoron2/public_html/bitrix/templates/books/header.php:32
#8: include_once(string)
	/home/decoron2/public_html/bitrix/modules/main/include/prolog_after.php:96
#9: require(string)
	/home/decoron2/public_html/bitrix/modules/main/include/prolog.php:11
#10: require_once(string)
	/home/decoron2/public_html/bitrix/header.php:1
#11: require(string)
	/home/decoron2/public_html/catalog/index.php:3
#12: include_once(string)
	/home/decoron2/public_html/bitrix/modules/main/include/urlrewrite.php:159
#13: include_once(string)
	/home/decoron2/public_html/bitrix/urlrewrite.php:2