[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost, 127.0.0.1]: Too many connections (400)
/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/lib/db/mysqlconnection.php:50
#0: Bitrix\Main\DB\MysqlConnection->connectInternal()
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/lib/db/mysqlconnection.php:103
#1: Bitrix\Main\DB\MysqlConnection->queryInternal(string, NULL, NULL)
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/lib/db/connection.php:329
#2: Bitrix\Main\DB\Connection->query(string, NULL, integer, integer)
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/lib/db/connection.php:357
#3: Bitrix\Main\DB\Connection->queryScalar(string)
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/security/lib/session.php:111
#4: Bitrix\Security\SessionTable::lock(string, integer)
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/security/classes/general/session_db.php:52
#5: CSecuritySessionDB::read(string)
	
#6: session_start()
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/include.php:260
#7: require_once(string)
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/include/prolog_before.php:14
#8: require_once(string)
	/var/www/www_en_freewifi_byte4b_com/html/bitrix/redirect.php:3

( ! ) Fatal error: Uncaught exception 'Bitrix\Main\DB\ConnectionException' with message 'Mysql connect error [localhost, 127.0.0.1]: Too many connections' in /var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/lib/db/mysqlconnection.php on line 50
Call Stack
#TimeMemoryFunctionLocation
10.03853253600Bitrix\Main\Diag\ExceptionHandler->handleException( )../exceptionhandler.php:0
( ! ) Bitrix\Main\DB\ConnectionException: Mysql connect error [localhost, 127.0.0.1]: Too many connections in /var/www/www_en_freewifi_byte4b_com/html/bitrix/modules/main/lib/db/mysqlconnection.php on line 50
Call Stack
#TimeMemoryFunctionLocation
10.03853253600Bitrix\Main\Diag\ExceptionHandler->handleException( )../exceptionhandler.php:0
20.04053272704session_write_close ( )../exceptionhandler.php:0
30.04053273096CSecuritySessionDB::write( )../exceptionhandler.php:0
40.04063273592Bitrix\Main\Entity\DataManager::delete( )../session_db.php:92