[Error] 
Call to undefined function mysqli_init() (0)
/var/www/of/bitrix/modules/main/lib/db/mysqliconnection.php:48
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/var/www/of/bitrix/modules/main/lib/db/mysqliconnection.php:123
#1: Bitrix\Main\DB\MysqliConnection->queryInternal()
	/var/www/of/bitrix/modules/main/lib/db/connection.php:332
#2: Bitrix\Main\DB\Connection->query()
	/var/www/of/bitrix/modules/main/lib/config/option.php:149
#3: Bitrix\Main\Config\Option::load()
	/var/www/of/bitrix/modules/main/lib/config/option.php:36
#4: Bitrix\Main\Config\Option::get()
	/var/www/of/bitrix/modules/main/lib/httprequest.php:329
#5: Bitrix\Main\HttpRequest->prepareCookie()
	/var/www/of/bitrix/modules/main/lib/httprequest.php:63
#6: Bitrix\Main\HttpRequest->__construct()
	/var/www/of/bitrix/modules/main/lib/httpapplication.php:42
#7: Bitrix\Main\HttpApplication->initializeContext()
	/var/www/of/bitrix/modules/main/lib/application.php:122
#8: Bitrix\Main\Application->initializeExtendedKernel()
	/var/www/of/bitrix/modules/main/include.php:23
#9: require_once(string)
	/var/www/of/bitrix/modules/main/include/prolog_before.php:14
#10: require_once(string)
	/var/www/of/bitrix/modules/main/include/prolog.php:10
#11: require_once(string)
	/var/www/of/bitrix/header.php:1
#12: require(string)
	/var/www/of/events/detail.php:1