[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (1040) Too many connections (400)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:65
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:122
#1: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#2: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/modulemanager.php:20
#3: Bitrix\Main\ModuleManager::getInstalledModules()
	/home/bitrix/www/bitrix/modules/main/lib/loader.php:77
#4: Bitrix\Main\Loader::includeModule(string)
	/home/bitrix/www/bitrix/modules/main/lib/data/connectionpool.php:308
#5: Bitrix\Main\Data\ConnectionPool->createSlaveConnection()
	/home/bitrix/www/bitrix/modules/main/lib/data/connectionpool.php:247
#6: Bitrix\Main\Data\ConnectionPool->getSlaveConnection(string)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:317
#7: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/modulemanager.php:20
#8: Bitrix\Main\ModuleManager::getInstalledModules()
	/home/bitrix/www/bitrix/modules/main/lib/loader.php:77
#9: Bitrix\Main\Loader::includeModule(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/module.php:261
#10: CModule::IncludeModule(string)
	/home/bitrix/www/local/events/ax_sales/set_sales_table.php:6
#11: require_once(string)
	/home/bitrix/www/local/php_interface/init.php:596
#12: _require_once(string)
	/home/bitrix/www/local/php_interface/init.php:580
#13: scan_recursive(string, string, string)
	/home/bitrix/www/local/php_interface/init.php:586
#14: scan_recursive(string, string, string)
	/home/bitrix/www/local/php_interface/init.php:605
#15: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include.php:218
#16: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#17: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#18: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#19: require(string)
	/home/bitrix/www/sale/index.php:5