[Error] 
Call to undefined function mysqli_connect() (0)
/home/site/public_html/bitrix/modules/main/classes/mysql/database_mysqli.php:29
#0: CDatabase->ConnectInternal()
	/home/site/public_html/bitrix/modules/main/classes/general/database.php:215
#1: CAllDatabase->DoConnect(string)
	/home/site/public_html/bitrix/modules/main/classes/mysql/database.php:76
#2: CDatabaseMysql->Connect(string, string, string, string)
	/home/site/public_html/bitrix/modules/main/start.php:232
#3: require_once(string)
	/home/site/public_html/bitrix/modules/main/include.php:10
#4: require_once(string)
	/home/site/public_html/bitrix/modules/main/include/prolog_before.php:14
#5: require_once(string)
	/home/site/public_html/bitrix/modules/main/include/prolog.php:10
#6: require_once(string)
	/home/site/public_html/bitrix/header.php:2
#7: require(string)
	/home/site/public_html/en/products/batpost/interface.php:2