[Bitrix\Main\DB\SqlQueryException]
Mysql query error: (1040) Too many connections (400)
SELECT GET_LOCK("20f4cb209733285dbb6f508a48d7518e", 60)
LIMIT 0, 1
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal(string, NULL, NULL)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#1: Bitrix\Main\DB\Connection->query(string, NULL, integer, integer)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:357
#2: Bitrix\Main\DB\Connection->queryScalar(string)
/home/bitrix/www/bitrix/modules/security/lib/session.php:110
#3: Bitrix\Security\SessionTable::lock(string, integer)
/home/bitrix/www/bitrix/modules/security/classes/general/session_db.php:52
#4: CSecuritySessionDB::read(string)
#5: session_start()
/home/bitrix/www/bitrix/modules/main/include.php:286
#6: require_once(string)
/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#7: require_once(string)
/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#8: require_once(string)
/home/bitrix/www/bitrix/header.php:1
#9: require(string)
/home/bitrix/www/posts/index.php:13
Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (1040) Too many connections in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
Stack trace:
#0 /home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php(132): Bitrix\Main\DB\MysqliConnection->queryInternal('SELECT * FROM `...')
#1 /home/bitrix/www/bitrix/modules/main/lib/db/connection.php(715): Bitrix\Main\DB\MysqlCommonConnection->getTableFields('b_sec_session')
#2 /home/bitrix/www/bitrix/modules/main/lib/db/sqlhelper.php(371): Bitrix\Main\DB\Connection->getTableField('b_sec_session', 'SESSION_ID')
#3 /home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php(815): Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', '2umrRb7jCA22Viz...')
#4 /home/bitrix/www/bitrix/modules/security/classes/general/session_db.php(92): Bitrix\Main\Entity\DataManager::delete(Array)
#5 [internal function]: CSecuritySessionDB::write('2umrRb7jCA22Viz...', '')
#6 [internal function]: session_write_close()
#7 {ma in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 137