Element is not found

[Error] 
Class 'CUtilities' not found (0)
/home/bitrix/ext_www/book365.vn/bitrix/components/vportal/gianhang.news.list/component.php:259
#0: include
	/home/bitrix/ext_www/book365.vn/bitrix/modules/main/classes/general/component.php:604
#1: CBitrixComponent->__includeComponent
	/home/bitrix/ext_www/book365.vn/bitrix/modules/main/classes/general/component.php:663
#2: CBitrixComponent->includeComponent
	/home/bitrix/ext_www/book365.vn/bitrix/modules/main/classes/general/main.php:1072
#3: CAllMain->IncludeComponent
	/home/bitrix/ext_www/book365.vn/nha-tai-tro/tin-tuc/detail.php:126
#4: include_once(string)
	/home/bitrix/ext_www/book365.vn/bitrix/modules/main/include/urlrewrite.php:176
#5: include_once(string)
	/home/bitrix/ext_www/book365.vn/bitrix/urlrewrite.php:2
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