[Error] 
Call to undefined function Bitrix\Main\DB\mysql_query() (0)
/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/lib/db/mysqlconnection.php:108
#0: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/lib/modulemanager.php:20
#2: Bitrix\Main\ModuleManager::getInstalledModules()
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/lib/loader.php:83
#3: Bitrix\Main\Loader::includeModule(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/php_interface/init.php:955
#4: include_once(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/include.php:234
#5: require_once(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/include/prolog_before.php:14
#6: require_once(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/include/prolog.php:10
#7: require_once(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/header.php:1
#8: require(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/ehlektroschetchiki/index.php:2
#9: include_once(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/modules/main/include/urlrewrite.php:159
#10: include_once(string)
	/var/www/vhosts/tech-domain-infopulsalru.host4g.ru/httpdocs/bitrix/urlrewrite.php:2